At 10.42 AM on 22 October 2003, while diving around the SS Yongala shipwreck site on the Great Barrier Reef, a diver took what he thought was just one of many underwater photos. But that picture was to tell a desperate story. In the lower right-hand corner of the shot, Tina Watson's lifeless body lies 25 metres down on the ocean floor, her arms outstretched, reaching upwards. This is the photograph which shocked millions across Australia and the US. How could this young woman have died, a mere seven minutes into her dive, when Gabe Watson, her diving buddy and husband of only eleven days, was a certified rescue diver? How could such an experienced diver have panicked and abandoned his new wife to her fate, as he later told police? As the tragedy unfolded and witnesses came forward, disturbing evidence mounted that something more sinister might have occurred. Could Gabe Watson have murdered Tina? This is the captivating mystery at the heart of this true-life thriller.