Ana Megawati
Ten metres underwater, shrouded in an impenetrable darkness, the rhythmic hum of the boat’s engine was the sole anchor for Dan Frolec’s racing thoughts. More than half an hour had elapsed since his friend Tom plunged into the mysterious underwater chasm, a desperate search for their missing companion, Michael. A chilling premonition of the worst began to grip Frolec – had the enigmatic hole claimed both his friends for good? Just as despair threatened to overwhelm him, a flurry of bubbles ascended, striking his mask. A faint light pierced the gloom as Tom emerged, alone, his head shake a silent, devastating confirmation: Michael remained lost, almost certainly perished. Little did Frolec know, the unfolding tragedy was merely the prelude to a far more sinister ordeal.
The Fateful Dive: A Descent into Darkness
The year was 2002, and for 32-year-old Dan Frolec, a resident of Prague, this Croatian diving excursion with his close-knit group of friends was meant to be a much-needed respite. Work pressures had been mounting, and his personal life was, by his own admission, "complicated." Days before the trip, Frolec had ended a five-year relationship to solidify his commitment to his new love, Jarka, whom he had met in a nightclub a year prior and with whom he "fell in love immediately." That very day, basking in the Croatian sun, he had sent Jarka a tender text: "I love you, fox." The idyllic setting, however, was about to be shattered by an unforeseen horror.
The diving enthusiasts comprised an experienced crew: Tom, the most seasoned diver; Ivo, a last-minute addition to the group after another friend cancelled; Marek, the captain of their vessel, the Domani; Zack; Roman; and Michael, a quiet individual known for his "dry sense of humour." Their shared passion for the underwater world had forged their bonds at a Prague diving club in the late 1990s. For Frolec, now 55, the ocean held a profound allure, a fascination born from growing up in landlocked Czechoslovakia. The Velvet Revolution of 1989, which dismantled the communist regime and opened the nation’s borders, had finally allowed him to pursue this passion. "One of the first things I did was buy a pair of fins and a mask and went to Croatia for some snorkelling," he recounts, a testament to the newfound freedom and his enduring connection to the sea.
Days into their sailing and diving adventure along the picturesque Croatian coast, Marek unfurled a map. Michael’s gaze was drawn to a peculiar, hand-drawn circle marking Poganica Bay. Marek had recently explored the area, discovering a dark, shallow hole in the seabed, but had wisely refrained from venturing inside. The group’s curiosity was collectively piqued, and they resolved to explore the mysterious opening that very evening.
As the sun began its descent, casting long shadows and ushering in a noticeable chill, Frolec opted to remain on the Domani with Marek and Ivo. The remaining divers, eager for discovery, donned their gear and descended into the water, swimming towards the intriguing hole. After approximately 45 minutes, Michael resurfaced, clambering onto the boat, his excitement palpable. He revealed that the hole was, in fact, a sea cave. The others, he explained, had continued their exploration within the cave while he returned to retrieve additional equipment. Kitted out with a basic torch, a dive computer for tracking, and a fresh air tank, he plunged back into the water. Frolec harboured no immediate concern. "The rule is to always dive with a buddy, but it didn’t occur to me that Michael was going alone because he was joining the others," he later explained, highlighting a critical lapse in judgment that would have catastrophic consequences.
Another 45 minutes elapsed. The cave explorers finally re-emerged, but Michael was conspicuously absent. Tom recounted how they had turned back, realizing the cave — a labyrinthine tunnel branching into two expansive domes — was too perilous for a night dive without specialized equipment. The gravity of the situation became terrifyingly clear when Frolec informed them that Michael had returned to the cave to find them. Panic seized the group. None had seen Michael. He was alone, deep within the cave, armed only with a standard torch rather than the robust, heavy-duty illumination essential for cave diving, and his hour’s worth of oxygen supply was rapidly diminishing.
The First Rescue Attempt and the Grim Reality
The sky had transformed into a canvas of midnight blue as Frolec and Tom hastily pulled on their wetsuits. They swam towards the ominous cave entrance, while the remaining crew navigated the Domani in wide arcs, clinging to the faint hope that Michael might have found an alternative exit or sanctuary ashore. Tom, equipped with his professional cave-diving gear, began his descent into the chimney-like tunnel. Frolec, tethered outside with a spare air tank, fought to maintain composure and conserve his own precious air supply, waiting in agonizing suspense.
"It was the longest 40 minutes of my life, staring into this black hole," Frolec remembers, the memory still vivid. Though not a religious man, a single plea echoed in his mind: "If there is any divinity, Michael needs your help." His desperate appeals seemed to fall on deaf ears. Tom eventually resurfaced, alone, shaking his head. Michael was gone. The two divers slowly ascended to the surface and swam back to the boat, the weight of their failure crushing them.
Marek immediately contacted the Croatian coastguard, reporting Michael missing. The chilling response: they wouldn’t be able to deploy a rescue team until the following morning. The group was instructed to remain at the location overnight, enduring a harrowing vigil under the starless sky.
A Second Tragedy: The Coastguard’s Ill-Equipped Response
With the first light of dawn, the coastguard vessel finally arrived. Marek meticulously explained the situation to the commander. What unfolded next, however, compounded the tragedy. The commander ordered two of his divers to enter the cave, but Tom, observing their preparations, grew deeply alarmed. The men were donning standard scuba diving equipment, fundamentally unsuitable for the complexities and inherent dangers of an underwater cave system. Proper cave diving demands specialized gear: powerful primary and secondary torches, redundant air tanks, and at least two dive computers to mitigate equipment failure. Tom repeatedly voiced his profound concerns to the commander, emphasizing the inadequacy of their equipment, but his warnings were summarily dismissed.
The two coastguard divers descended. Following the previous pattern, one diver remained outside the entrance while the other swam into the perilous tunnel. An hour of tense waiting passed on the surface, the fear among those on the Domani intensifying. Then, one of the divers surfaced, shouting an urgent, distressed message in Croatian to his commander. His partner was still inside.
The horrifying realization struck: the deadly cave had likely claimed a second life. Frolec and Tom, despite their exhaustion and recent trauma, once again donned their wetsuits, embarking on a second, desperate rescue mission. This time, the morning sun’s rays pierced the water, illuminating the black maw of the cave, starkly revealing its terrifying depth. Tom once again emerged alone from the long, vertical chimney, complaining of the abysmal visibility within. They rose to the surface, the tragedy deepening.
An hour later, a Croatian police boat arrived. Marek was instructed to follow it. As they approached the pier, police officers awaited their arrival. "I didn’t think anything of it because this was clearly an accident," Frolec recalled, assuming standard procedure for such a grave incident. They were transported to a police station, where they were individually called in to provide detailed testimonies. Then came the unsettling news: they were not permitted to leave and would be held overnight. "We thought: they’re investigating the incident, maybe this is what they do in Croatia," Frolec recounted, still oblivious to the nightmare that was about to unfold.
From Witness to Suspect: The Police Investigation Begins
The following morning, Frolec and Ivo were roused by an officer and led into another room. There, their photographs were taken, and fingerprints meticulously collected. Alarm bells began to clang loudly in Frolec’s mind. He immediately requested a Czech-speaking lawyer. The two friends were separated, and Frolec was ushered into a room where a duty lawyer awaited him. What followed was a surreal and terrifying experience: Frolec was hooked up to a machine, wires connected to his fingers. He was about to undergo a lie-detector test.
"How did Michael die?" the officers demanded, their questions immediate and accusatory. This was the first official confirmation for Frolec that his friend was indeed dead. The interrogation intensified, spiralling into bewildering accusations: "Did you know that he was stabbed with a knife? Was it your knife? Did you know it was a murder?" At this point, Frolec stated, "It became obvious they were trying to blame us because the navy diver died." He would later learn that he had "failed" the polygraph test, a dubious outcome given the test’s widely acknowledged scientific unreliability and the extreme stress he was under. Further invasive tests followed: blood samples were drawn, and his fingernails clipped. Finally, he was brought into a room with two police officers, a Czech interpreter, and a state prosecutor. Utterly exhausted and mentally shattered, Frolec received the devastating blow: he, along with Ivo, was now officially a suspect in Michael’s murder. "I felt shock combined with fear. The situation began looking very dangerous," Frolec described, the reality of his predicament crashing down upon him.
Imprisonment and Public Scrutiny
After another harrowing, sleepless night in police custody, Frolec was finally introduced to his Czech-speaking lawyer. He was then abruptly moved to the police gym, where a pile of diving gear lay on the floor. It was his. Desperately, he searched for his dive computer, a crucial piece of evidence that would unequivocally prove he had not entered the cave, thus rendering a murder impossible. But the computer was gone. An officer informed him it had been taken for "investigation." It was at this moment, Frolec recalled, that a chilling suspicion began to take root: he was being framed. "This was the moment where I started to worry about whether this was a fair investigation, fearing they would manipulate it," he confessed. Then came the cold, metallic click of handcuffs.
Escorted to court with Ivo, similarly manacled, the proceedings were swift and stark. "There were no court proceedings or anything like that. We were brought in front of a judge who told us why we were there and that we were going to be sent to jail for at least a month while the police carried out their investigation," Frolec detailed. They faced the grim prospect of imprisonment without formal charge for up to six months under Croatian law, a stark violation of basic human rights in many other jurisdictions.
Everything felt like a nightmarish blur. His mind, reeling from exhaustion and fear, struggled to process. "I hadn’t brushed my teeth for three days. It was such a small thing, but it was a really horrible feeling." His first night in jail introduced him to his new cellmates: two suspected drug dealers and a man awaiting trial for his wife’s murder. Soon, their cell would be grimly dubbed "two dealers, two killers" by other inmates.
Despite the unsettling company, Frolec found an unexpected camaraderie with his cellmates. "We shared a lot of laughter," he remarked. The language barrier initially complicated his attempts to explain his situation, but clarity arrived with the day’s newspaper. Plastered across the front page was a photograph of the Domani, alongside Frolec’s and Ivo’s full names, prominently featuring the accusation of Michael’s murder. Overwhelmed, Frolec broke down, feeling the insurmountable weight of public condemnation. "I felt quite desperate. Everybody believes what is written in the newspaper," he said, highlighting the devastating power of media sensationalism.
Meanwhile, back in Prague, Jarka was at work when an unknown woman called, asking if she was Frolec’s girlfriend. It was the Czech consul in Croatia, delivering the shocking news of her boyfriend’s arrest on suspicion of murder. Jarka was then tasked with the unimaginable: informing Frolec’s parents, whom she had never met. "Jarka went to my parents’ apartment and rang their bell. That’s how they first got to know each other," Frolec recounted, a surreal introduction born from tragedy. Before she could fully deliver the news, their son’s image flashed across the evening news, confirming the horrifying ordeal.
For Frolec, the initial days in jail were excruciating. Another front-page story sensationally accused him, Ivo, and Michael of being entangled in a "gay love triangle," which led to "verbal provocations" from other inmates. The looming prospect of serving 40 years – the maximum sentence for murder in Croatia – weighed heavily on him. "It was a very strange and frightening feeling. I had to convince myself that this option was not on the cards," he recalled. This conviction was severely tested during Jarka’s first visit. "I planned to remain calm, but I screwed it up. She cried and then I cried," he admitted. Jarka, however, remained resolute, vowing to secure Frolec a more competent lawyer.
The Fight for Freedom: Legal Battle and Critical Evidence
After funds were deposited into his prison account, one of Frolec’s first purchases was a "kid’s notebook with Cinderella on the front page" to chronicle his time in custody. Its pages became a repository for his anguish, his shortsighted fears of a post-9/11 society, moments of unexpected calm watching The Simpsons with cellmates, and the shocking observations of inmates feigning to swallow antidepressants before spitting them out to use as prison currency. These detailed entries offer a unique, raw insight into the psychological toll of wrongful imprisonment.
After several weeks, a glimmer of hope appeared. His new lawyer, secured by Jarka, seemed to grasp the complexities of the case with greater acumen. The lawyer informed Frolec that his diving buddies had provided testimonies to the investigating judge, effectively dismantling the police’s murder theory. Crucially, Michael’s dive computer, which the police had initially confiscated, also provided irrefutable evidence: it showed that Michael had been alive for 30 minutes within the cave, actively searching for an exit, long after any alleged interaction with Frolec or Ivo. This data corroborated the accidental nature of his death.
However, one lingering piece of "evidence" remained: red stains on the Domani that the police claimed were bloodstains. Frolec knew these were merely marks left by mooring ropes, but his freedom hinged on scientific confirmation. He would not be released until DNA tests conclusively disproved the police’s assertion.
Exoneration and Release: The Truth Emerges
Eventually, the bodies of both Michael and the coastguard diver were recovered from the depths of the cave. The DNA test results finally arrived, confirming that the red stains on the Domani were indeed not blood. The alleged "stab wounds" on Michael were ultimately concluded to be self-inflicted injuries sustained in a desperate struggle to escape the treacherous cave. After nearly a month of agonizing imprisonment, Frolec and Ivo were finally released. "I remember the moment the cell door opened and the guard telling me: ‘It’s your time,’" Frolec recounted, the words etched into his memory. The hours immediately following his release were a blur of relief and disorientation, but he distinctly recalled a "really nice meal" with his lawyers and planning his return to Prague with Ivo the following day. Their arrival at Prague airport was met by a media frenzy, a stark reminder of the public’s intense, often misinformed, interest in their ordeal.
Lasting Impact and Lessons Learned
The harrowing experience, Frolec reflects, "influenced my life in a way that I actually value a lot. Not many people experience being stuck in a room like that. I value my freedom and I take everything with a lot less stress now." The psychological resilience forged in those darkest hours transformed his perspective on life.
The details of Michael’s final moments continue to haunt Frolec. He deduces that Michael’s frantic movements would have stirred up silt near the tunnel entrance, obliterating visibility. Trapped in a state of sheer panic, his air supply dwindling, Michael was likely scrambling blindly for an exit in absolute darkness. It’s a terrifying image that underscores the inherent dangers of such an environment.
After settling back into a semblance of routine, Frolec undertook a profoundly important task. Back on the Domani, just hours before the fateful dive, he had captured a photograph of Michael, beaming with a bright smile as he ate. Frolec framed this image and, accompanied by the crew of the Domani, visited Michael’s mother to present it to her. "It was very emotional because we realised that her life had changed for ever," he said, acknowledging the enduring grief and loss.
Ivo, too, had narrowly escaped having his life irrevocably altered. Frolec admits to considering if he feels guilt for inviting Ivo on the trip at the last minute. "If he felt angry or devastated by the experience, I would definitely feel more guilty. But, like me, he’s a pragmatic person, and we made it out of jail," he explains, highlighting their shared stoicism. The two remain close friends. Frolec now lives in Bali with Jarka, who is now his wife, and their two children. The ordeal, he says, was "confirmation that we belong together," a testament to the strength of their bond forged under extreme duress.
Frolec continues to dive, enjoying recent excursions with friends in Bali. However, with children, he now draws a firm line at cave diving. Despite this, he did undertake specialized cave-diving training in Florida after the Croatian ordeal, driven by a desire to overcome the feeling of helplessness he experienced "waiting for Tom" on that fateful night. Once a year, he visits Prague, always meeting Ivo. While the topic of Croatia initially dominated their conversations, over the two decades since the tragedy, they have both moved on. During their last annual reunion in Prague’s city centre, Frolec noted, they simply "grabbed a good Czech beer and caught up on other stuff in our lives," a sign of healing and renewed normalcy.
Cave Diving Safety: A Call for Adherence to Protocols
This incident serves as a stark reminder of the extreme risks associated with cave diving and the critical importance of adhering to stringent safety protocols. Cave diving, a highly specialized and inherently dangerous form of underwater exploration, demands extensive training, meticulous planning, and specific redundant equipment. Unlike open-water diving, overhead environments preclude direct ascent to the surface, meaning divers must navigate complex passages, manage limited air supply, and contend with potential silt-outs that can instantly reduce visibility to zero.
Key safety protocols for cave diving include:
- Redundant Equipment: Carrying multiple, independent systems for air supply, lighting, and navigation.
- Specialized Training: Rigorous training in cave navigation, emergency procedures, and line-following techniques.
- Buddy System: Never diving alone, and maintaining constant contact with a dive partner.
- Dive Planning: Thorough planning of depth, time, gas consumption, and emergency contingencies.
- Appropriate Lighting: Powerful, dedicated primary and backup lights to penetrate the absolute darkness.
- Line Following: Maintaining continuous contact with a guide line to ensure a safe path in and out of the cave.
The unfortunate loss of both Michael and the Croatian coastguard diver highlights the severe consequences of underestimating the dangers of such environments and the perils of using inappropriate equipment or disregarding established safety standards. The subsequent wrongful accusation of murder against Dan Frolec and Ivo further underscores the potential for systemic failures, not only in rescue operations but also in legal and investigative processes, when standard protocols and critical thinking are compromised. This story remains a powerful cautionary tale of human resilience in the face of both natural peril and institutional injustice.
