Here's Lucy - Season 5 - Eps 18: Lucy Goes to Prison
Lucy goes undercover again, this time to prison. Lucy attempts to get needed information from a cell mate, but has little luck until Lucy fills her with alcohol.
About Here's Lucy

Title: Here's Lucy
First Air Date: 1968-09-23
Last Air Date: 1974-03-18
Status: Ended
Rating: 6.7/10 (from 28 votes)
Language: EN
Seasons: 6
Total Episodes: 144
Network: CBS
Genres: Comedy
Production Companies: Unknown
Cast

Lucille Ball
Lucy Carter

Gale Gordon
Harrison Carter