Penny Addams lives in a constant state of depression stemming from the trauma of her father's death when she was just a young girl. Her brother, Chase, and stepmother, Lee, work to help Penny process her grief through psychotherapy and revisiting their past, but only the revelation of long-buried family secrets -- including her mother's secret lover and the true nature of her father's death -- can bring Penny out of her intense despair.
Unfortunately the movie The Secret Heart is not yet available on HBO Max.
| Production | Edwin H. Knopf | Producer |
| Writing | Rose Franken | Story |
| Writing | Whitfield Cook | Screenplay |
| Camera | George J. Folsey | Director of Photography |
| Art | Edwin B. Willis | Set Decoration |
| Directing | Robert Z. Leonard | Director |
| Editing | Adrienne Fazan | Editor |
| Writing | William Brown Meloney | Story |
| Writing | Anne Morrison Chapin | Screenplay |
| Costume & Make-Up | Irene | Costume Supervisor |
| Sound | Bronislau Kaper | Original Music Composer |
| Directing | Bill Lewis | Assistant Director |
| Sound | Robert Franklyn | Orchestrator |
| Art | Edward C. Carfagno | Art Direction |
| Crew | Warren Newcombe | Special Effects |
| Art | Henry Grace | Set Decoration |
| Art | Cedric Gibbons | Art Direction |
| Crew | Robert Franklyn | Additional Music |
| Crew | Lennie Hayton | Additional Music |
| Sound | Douglas Shearer | Sound Director |
| Sound | Wally Heglin | Orchestrator |
