Thicker Than Water is a 1994 Welsh thriller television film directed by Marc Evans, starring Theresa Russell, Jonathan Pryce, Robert Pugh and Catherine Neilson. It is based on the novel of the same name by Dylan Jones, about a Welsh doctor who attempts to put his life together after the death of his pregnant wife.
^ "Thicker Than Water". Publishers Weekly. Retrieved 3 June.Synopsis
Debbie and Jo (both portrayed by Theresa Russell) are identical twins. Jo is killed in a car accident, and her husband, Cardiff physician Sam Crawford (Jonathan Pryce) is grieving for her. Despite this, Debbie starts to act increasingly like Jo for Sam to overcome his grief. Sam meets with, and is drawn to, Chloe (Catherine Neilson), his wife's former colleague. Meanwhile, Debbie's fertility problems seems exacerbated by a post-viral weakness, insists that she still feels Jo's presence. Mysterious circumstances lead Sam to suspect that Jo's death wasn't an accident at all.
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