Based on the provocative film documentary of the same name, The Third Dive investigates the shocking death of a world-renowned conservation activist. When experienced diver and award-winning filmmaker Rob Stewart (Sharkwater and Sharkwater: Extinction) drowned while diving off the coast of the Florida Keys in 2017, it was a shock to the world's environmental movement. Reports suggested that Stewart was encouraged to perform a dangerous and ultimately fatal dive by a reckless Svengali-like instructor named Peter Sotis. Some bloggers went so far as to report that Sotis survived the dive by clawing his way onto the boat first, leaving Stewart to drown. A civil case was launched which directed blame at Horizon Divers, the company that had taken Stewart out on the dive. The allegation was that they had not done their jobs properly and left him to die in the water. Through interviews and investigative reporting, The Third Dive is a compelling read that attempts to uncover the mysterious and disturbing circumstances surrounding Rob Stewart's untimely death.