Season 4, Episode 25 Grandma Leaves Grandpa

First Aired: April 8, 1979

Ann plays peacemaker for her parents (Nanette Fabray, Jeff Corey), who are considering divorce after 40 years. Bonnie Franklin. Julie: Mackenzie Phillips. Barbara: Valerie Bertinelli. Schneider: Pat Harrington. Messenger: Melanie Magruder.