Four spine-tingling episodes presented by Italy's master of horror, Dario Argento; originally made in 1973 for Italian television, "Door Into Darkness" pushes the boundaries of violence.
While driving home late at night, a young woman almost runs into the dead body of a woman; after discovering that the woman has been shot, she reports the incident to the police but the body is nowhere to be found.
An unknown mental patient escapes from an insane asylum and begins stalking innocent women.
A detective tries to figure out how a woman could have been murdered on a crowded tram without anyone noticing.
A young couple and their baby move into an isolated apartment, unaware that the man upstairs has just murdered his wife.