Max goes to Las Vegas to secretly record a conversation between two KAOS operatives. He then goes undercover as a worker at the Jericho Construction Company to learn how KAOS is destroying important government buildings.
- Maxwell Smart - Don Adams
- Agent 99 - Barbara Feldon
- The Chief - Edward Platt
- Carlson - Stacy Keach
- Charlie Watkins (Cigarette Girl) - Angelique
- Larabee - Robert Karvelas (uncredited)
- Agent 77 (uncredited)
- Frank Lloyd Joshua - William Chapman
- Carlos - Steve Gravers
- Man - Louis Quinn
- Baron von Krupa (uncredited)
- Martini (uncredited)
Weapons and Gadgets
The title refers to the well-known spiritual "Joshua Fit the Battle of Jericho" with its tagline "And the walls came tumbin' down" which retells the Biblical story found at Joshua 6:15-21.