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?
Unfortunately the movie Hart to Hart: Secrets of the Hart is not yet available on HBO Max.
| Writing | Rob Gilmer | Writer |
| Directing | Kevin Connor | Director |
| Production | James Polster | Producer |
| Production | Stefanie Powers | Producer |
| Production | James G. Hirsch | Executive Producer |
| Production | Robert Papazian | Executive Producer |
| Production | Robert Wagner | Executive Producer |
| Sound | Arthur B. Rubinstein | Music |
| Production | James Veres | Executive Producer |
| Editing | Robert L. Sinise | Editor |
| Camera | Douglas Milsome | Director of Photography |
| Art | Peter Wooley | Production Design |
| Costume & Make-Up | Faye Sloan | Costume Design |
| Art | Kathy Curtis-Cahill | Set Decoration |
| Costume & Make-Up | Lon Bentley | Makeup Artist |
| Costume & Make-Up | Faith Vecchio | Hairstylist |
| Directing | Judith Vogelsang | First Assistant Director |
| Directing | Pattee Roedig | Second Unit Director |
| Lighting | Lon Thompson | Gaffer |
| Crew | Gregory J. Barnett | Stunt Coordinator |
| Camera | Moshe Levin | Camera Operator |
