Guest Stars Anthony Andrews as Tony Selkirk Katherine Helmond as Vivian Endler Patrick Duffy as Ralph Sutton Donna Dixon as Jill Harry Morgan as Professor Milo Endler Gary Frank as Dr. Barry Mason Michelle Phillips as Barbara Carroll José Ferrer as Deke Donner Jenilee Harrison as Connie Wilker Patrick Ward as Mongala Delvene Delaney as Cruise Director Yvonne Petty Co Starring Brendan Lunney as David Selkirk Queenie Ashton as Mrs. Selkirk