Episode 1
Host Phil Keoghan welcomes 12 new crew members to Catalina Island, off the coast of Southern California; competitors must build a concrete retaining wall for their first individual competition.
Episode 2
Part two of a special two hour season four premiere.
Episode 3
Crew members visit a plant nursery where attention to detail is key when building a complex planter box in the individual challenge.
Episode 4
Diesel mechanic Quincey Walker guides the crews through a series of challenges that involve servicing automobiles.
Episode 5
Savage Crew and Dirty Hands get tangled up in the team challenge when they must organize and load a 15,000-pound fishing net onto a boat.
Episode 6
Crew members compete in pairs to shrink wrap a large container, with the last couple to finish facing the overtime challenge where one person will be eliminated from the individual competition.
Episode 7
Season three competitor and carpenter Lamar Hanger returns to guide the crews through a series of construction challenges.
Episode 8
Episode 9
Episode 10
