Dick Van Patten Tom Bradford Actor Betty Buckley Sandra Sue Abbott "Abby" Bradford Actor Adam Rich Nicholas Bradford Actor Willie Aames Tommy Bradford Actor Connie Needham Elizabeth Bradford Actor Dianne Kay Nancy Bradford Actor Susan Richardson Susan Bradford Stockwell Actor Laurie Walters Joannie Bradford Actor Lani O'Grady Mary Bradford Actor Grant Goodeve David Bradford Actor Joan Prather Janet Bradford Actor Brian Patrick Clarke Merle "The Pearl" Stockwell Actor Nicholas Pryor Guest Star Micheal Goodrow Ernie Fields Actor Michael Thoma Dr. Greg Maxwell Actor Jennifer Darling Donna Actor K.C. Martel Guest Star James Karen Guest Star Michele Greene Guest Star Tony O'Dell Guest Star Jack Bender Director Harry Harris Director Irving J. Moore Director Vincent McEveety Director Leslie H. Martinson Director Arnold Laven Director Stan Lathan Director Lee Martinson Director Gil Grant Writer Nick Thiel Writer Bruce Shelly Writer Chris Manheim Writer Sandra Kay Siegel Writer Steven Hensley Writer James Schmerer Writer Channing Gibson Writer David Braff Writer Pat Green Writer Gary Adelson Writer J. Miyoko Hensley Writer