The Sign of the Killer was released in the year 2001。The Sign of the Killer is also called as The Caveman's Valentine, Visões de um Crime, The caveman's valentine - luolamies, Muerte de un ángel, Hombre de la cueva, Crime Shades, Caveman's Valentine - Tod eines Engels, Caveman。

Romulus is mentally ill, a troglodyte in a New York City park. He's also a gifted composer and the father of a city cop. On Valentine's Day, a young man freezes in a tree near his cave. The police determine it's the accidental death of someone behaving bizarrely, but Romulus believes a friend of the dead youth who says that noted avant-garde photographer, David Leppenraub, murdered him. Romulus, urged on by hallucinations of his wife as a young woman, resolves to catch the killer and manages to be invited to Leppenraub's farm to play a new composition. Can Romulus hold it together long enough to get to the bottom of the death and also to make a breakthrough with his daughter?

The Sign of the Killer actors and actresses include Ann Magnuson, Anthony Michael Hall, Jay Rodan, Lyriq Bent, Samuel L. Jackson, Tamara Tunie, Vija Brigita Grosgalvis, Warren Belle。