4x1 - Welcome to Catalina Island

January 4, 2023

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.

4x2 - Perfect Symphony

January 4, 2023

Part two of a special two hour season four premiere.

4x3 - I Look Like Curious George

January 11, 2023

Crew members visit a plant nursery where attention to detail is key when building a complex planter box in the individual challenge.

4x4 - That's a Safety Hazard

January 18, 2023

Diesel mechanic Quincey Walker guides the crews through a series of challenges that involve servicing automobiles.

4x5 - Crush It!

January 25, 2023

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.

4x6 - Rise and Grind

February 1, 2023

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.

4x8 - Pressure Is On

February 15, 2023

4x9 - This Is Not a Sprint, It’s a Marathon

February 22, 2023

4x10 - Keep Battling ‘til the End

February 22, 2023