A New York executive, Martha, witnesses a murder and discovers that the killer is her new brother-in-law. When her sister is nearly killed and her sister's children kidnapped to silence her, she must unravel the mystery behind the murder to save the kids and see justice served.
Unfortunately the movie Deadly Family Secrets is not yet available on HBO Max.
| Writing | Franklin Coen | Novel |
| Directing | Richard T. Heffron | Director |
| Writing | Brian Taggert | Teleplay |
| Sound | Nan Schwartz | Original Music Composer |
| Camera | Stevan Larner | Director of Photography |
| Editing | Christopher Nelson | Editor |
| Art | Adele Plauche | Art Direction |
| Art | John Frick | Production Design |
| Costume & Make-Up | Shelley Komarov | Costume Design |
| Directing | Patricia A. Fullerton | Script Supervisor |
| Production | Melinda Gartzman | Casting |
| Production | Dennis Stuart Murphy | Producer |
| Production | Jack H. Degelia | Producer |
| Production | Michael Filerman | Executive Producer |
| Crew | Laura King | Stunt Double |
| Crew | David Sanders | Stunt Coordinator |
| Crew | Jody Haselbarth | Stunt Double |
| Crew | Mark Kay | Stunts |
| Crew | Jackson Burns | Utility Stunts |
| Lighting | Robert Driskell | Gaffer |