Set in San Francisco, Jonathan and Jennifer Hart are faced with the prospect of being reunited with Jonathan's long lost sister, and her nephew. Is it possible that Jonathan will finally discover a key to his past or will the "family" turn out to be after something, putting Jonathan and Jennifer in danger's past one more time?

• Papazian-Hirsch Entertainment International
• Columbia Pictures Television
• Robert Wagner
• Stefanie Powers
• Lionel Stander
• Jason Bateman
• Marion Ross
• Wendie Malick
• John Beck
• Pat Morita