Director Charles Saunders based his screenplay for Come Back Peter on a play by A.P. Dearsley. The story concerns an elderly British couple (Humphrey Lestocq, Kathleen Boutall) who move from their old home to smaller but comfortable newer digs. The couple is then invaded by their grown children, who insist upon moving in with them. Some laughs, some tears, some pretzels, some beers. Come Back Peter went down easily in a brisk 80 minutes.