Mark Glazer is a mentally disturbed young man, who has a sexual obsession for his dead mother.
He drives around in his father's RV in order to pick up female hitchhikers to kidnap, assault, and murder so he can fulfill his sexual desires.
One of the women he picks up is protagonist Daniela, who, unfortunately for her, strongly resembles his mother, and she is about to take her life's ride.
Hitcher in the Dark was made by Umberto Lenzi for Filmirage for crediting him as Humphrey Humbert on Ghosthouse.
[4][3] In GoreZone, Loris Curci called it a "well-crafted psychological thriller in the style of Lenzi's giallo shockers.