Submarine Graveyard

S1 E2: In the summer of 1944, two submarines, the USS Flier and the Robalo, vanished under a treacherous stretch of water in the Philippines. Neither sub has been found, nor a cause for why they sank. The Dive Detectives join forces with the son of The Flier’s sole survivor to locate the lost submarine. And the deathbed revelation of a retired Naval officer helps launch the search for the Robalo. The clues are in place but with rough seas, killer sharks, and local pirates in their path, the two lost subs may be the least of their concerns.