- Country: UK
- Genres: Thriller
- Release: 1994-04-10
- Director: Marc Evans
- Writers: Dylan Jones , Trevor Preston
- Language: English
- Stars: Theresa Russell , Theresa Russell , Jonathan Pryce , Robert Pugh , Catherine Neilson , Richard Lynch (II) , Alan David , Crispin Letts , Sion Probert , Stephen Lyons , James Rourke
- Runtime: 140 min
- Awards: 1 nomination
- AKA: Thicker Than Water (United Kingdom) , Thicker Than Water , Le sang lui va si bien (France, French Republic) , Vettä sakeampaa (Finland)
- Plot: Debbie and Jo are identical twins. After Jo is killed in a car accident. Debbie starts to act increasingly like Jo. Mysterious circumstances lead Sam to suspect that the accident wasn't an accident at all.
- IMDB:tt0108326
Thicker Than Water Cast · · · ALL
Marc Evans
Director
Theresa Russell
Debbie / Jo
Jonathan Pryce
Sam
Robert Pugh
Paul
Catherine Neilson
Chloe
Richard Lynch
(II)
Dorian Phipps
Alan David
Chief Superintendent
Crispin Letts
Nastygram
Sion Probert
Nastygram Agent
Jack Waters
Mini-Cab Man
Peter Doran
Estate Agent
Rhys Parry Jones
Charge Nurse Howard
Lisa Palfrey
Young Mother
Hugh Thomas
Psychiatrist
Martin Troakes
Ellis
Grahame Fox
Dalton (uncredited)