Romulus, a misunderstood musician turned recluse hiding from personal demons in a New York City cave, finds the frozen body of a young drifter in a tree. The authorities, including his police officer daughter, claim the death is accidental. Romulus is convinced the man was murdered by a prominent art photographer but how can he prove he's right when everyone thinks he's insane?
Unfortunately the movie The Caveman's Valentine is not yet available on HBO Max.
| Directing | Kasi Lemmons | Director |
| Production | Samuel L. Jackson | Executive Producer |
| Writing | George Dawes Green | Screenplay |
| Writing | George Dawes Green | Novel |
| Production | Danny DeVito | Producer |
| Production | Don Carmody | Executive Producer |
| Production | Nicolas Clermont | Co-Executive Producer |
| Production | Shane Kinnear | Executive Producer |
| Production | Julie Yorn | Executive Producer |
| Production | Elie Samaha | Producer |
| Production | Stacey Sher | Producer |
| Production | Michael Shamberg | Producer |
| Production | Eli Selden | Executive Producer |
| Production | Jonathan Weisgal | Co-Executive Producer |
| Production | Andrew Stevens | Producer |
| Production | Michael Bennett | Co-Producer |
| Production | Pamela Abdy | Co-Producer |
| Camera | Amy Vincent | Director of Photography |
| Sound | Terence Blanchard | Music |
| Art | Robin Standefer | Production Design |
| Editing | Terilyn A. Shropshire | Editor |
| Art | Grant Van Der Slagt | Art Direction |
| Art | Peter Nicolakakos | Set Decoration |
| Costume & Make-Up | Denise Cronenberg | Costume Design |
