Thicker Than Water 1993

Synopsis:

Debbie and Jo are identical twins. After Jo is killed in a car accident, Debbie starts to act increasingly like Jo. Mysterious circumstances lead Jo's widower Sam to suspect that the accident wasn't an accident at all.

Directed by: Marc Evans
Written by: Trevor Preston
Release date: 1993-07-29
Cast:
Theresa Russell
Theresa Russell
Debbie / Jo 
Robert Pugh
Robert Pugh
Paul 
Richard Lynch
Richard Lynch
Dorian Phipps 
Alan David
Alan David
Chief Superintendent