Harvey Korman is a stern prison warden and Tim Conway is an inmate soon to be released on parole, but Tim's talkative wife may prevent his release. Accident prone Tim goes to the Emergency Clinic for a splinter, but he has a Knack for things to go wrong.

The Amateur Theater "ShowTime" puts on a mystery "Murder on the Accidental Express" using members of the audience, with Tim playing Sheerluck Holmes.