A series of murders in California bear eerie similarities, but police have trouble connecting them — that is until unique ballistics and mysterious surveillance.

  Josh Gates takes on Central America's jungles to investigate the legendary crystal skull discovered by a renowned adventurer who was the inspiration for Indiana Jones.

Senior takes a risk by starting a Spartan Race-inspired build before meeting the client, then has to change course to accommodate his requests.

  Jake is ambushed and dumped atop a volcano in Iceland. Jake could lose more than the game when he makes a near-fatal error in the land of fire and ice.

  KC and Troy challenge Oz, aka the Bangkok Hooker, in a Muay Thai boxing match, and prepare for it by drinking snake venom. 

  Extreme angler and underwater detective Jeremy Wade goes in search of the real creature behind the enduring legend of the sea serpent?

When badly beaten corpses wash up on a Mexican beach the usual suspects are under suspicion.

  A new client asks Dave to envision a future where the Hummer H2 continued to be produced and to build what he thinks that car might look like 20 years into the future.