Expedition Unknown - Season 13

Josh is on the hunt for the lost tomb of Alexander the Great; he dives Egypt's coast, revealing ruins of Alexander's Royal Quarter; he tunnels under modern Alexandria, but a water pump malfunction puts everything at risk.

Spanning Europe and Africa, Josh's chase for Alexander's remains and fortune ramps up. Clues mount in a flooded ruin beneath Alexandria, Egypt. Later, Josh gathers shocking evidence Alexander's body may actually lie in Venice's St. Mark's Cathedral.

Josh chases fortune stolen by loyalists to Britain's crown during the American Revolution. Jumping into two investigations of the infamous Doan Gang, Josh helps dig up a cache of plundered coins. Later, a cave search pinpoints the turncoats' hideout.

Josh meets the restoration team of the Fleet Air Arm Museum searching for parts of Fairey Barracudas, a model of British bombers of which no intact examples exist. He excavates a former airfield in St Andrews, Scotland then finds wreckage near Alta in the far north of Norway, where Barracudas once attacked the Nazi battleship Tirpitz.

The once-luxurious emporium of Rhapta disappeared in a cataclysm centuries ago. In search of Africa's Atlantis, Josh Gates dives into remote waters off of Zanzibar in search of ancient shipwrecks, exploring a possible ruin only visible at low tide.

Josh Gates travels to Cote d'Ivoire in West Africa to find the wreckage of an American military plane that disappeared in the closing days of World War II. Eighteen Women's Army Corps members were on board and are listed as MIA to this day.