Mister Frost 1990

He hasn't spoken in two years. No one knows his identity. Officially he doesn't exist... but 24 corpses do. Call evil by its proper name.

Directed by Philippe Setbon

Frost is arrested and committed for murder after he is apprehended burying his victims in the garden. However, even while under psychiatric care and tight hospital security, it becomes obvious that Mr. Frost is not all he seems to be.