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?
You can now watch The Caveman's Valentine online on the following streaming providers in the United States.
| 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 |
