The 25th episode of Three's Company Season 2 is titled . First aired on May 16, 1978, this episode served as the season finale. Episode Summary

The episode features iconic slapstick moments, including Jack's physical comedy and a notoriously rock-hard birthday cake. Key Details Guest Star: Loni Anderson as Susan Walters. Director: Bill Hobin. Writers: Kathy Donnell and Madeline DiMaggio Wagner.

Fearing Susan will hurt Jack again and desperate to get him to his own party, Janet and Chrissy concoct a scheme to pry him away from her.