Dave Not Coming Back 2020 Deep Water Diving Documentary Movie br Dave Not Coming Back is a documentary film that tells the story of two friends, Don Shirley and David Shaw, who embark on a deep-water diving expedition in the Boesmansgat cave in South Africa. During their dive, they stumble upon a body that had been lying there for nearly a decade - the body of 20-year-old Deon Dreyer. Despite knowing the risks, they decide to retrieve the body, which ultimately leads to a tragic outcome.