Aired: February 9, 1968 | Season: 3 | Episode: 22

Overview
Runtime: 60m
Directed by: Lawrence Dobkin
Written by: Leigh Chapman, Robert Bloomfield
Guest stars: Don Howorth-Mr. World, Ed Asner, George Petrie, Gil Lamb, Jack Rigney, Jerry Laveroni, Jim Nolan, John Kellogg, Johnny Jensen, Kevin Hagen, Sebastian Tom, Sharon Farrell
Description
Jim is guarding a stage coach carrying the western states entire supply of smallpox vaccine when it's attacked and the drug stolen. While West, injured in the attack, struggles with amnesia, Artemus tries to find both his friend and the drug before a full-scale epidemic hits.