Mark of Cain 1986

Synopsis:

A couple live in an old, isolated mansion. The husband's murderous, insane twin escapes from a lunatic asylum. The cops haul off the wrong twin and the wife is stuck with the killer.

Directed by: Bruce Pittman
Written by: John Sheppard & Peter Colley
Release date: 1986-09-24
Runtime: 90 minutes
Cast:
Robin Ward
Robin Ward
Sean O'Brien / Michael O'Brien 
Wendy Crewson
Wendy Crewson
Dale 
Antony Parr
Antony Parr
Dr. Clifford 
Deborah Grover
Deborah Grover
Molly 
Cynthia Kereluk
Cynthia Kereluk
Nurse