Unnaturally-close jet-setting twins become enmeshed in the Swinging London scene, where their relationship is strained after they befriend a predatory hustler and his girlfriend.
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Photos and Videos
Cast verified as complete
| Judy Geeson | ... |
Jacki / Sister
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| Martin Potter | ... |
Julian / Brother
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| Michael Redgrave | ... |
James Harrington-Smith
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| Alexis Kanner | ... |
Clive / Gambler
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| Mike Pratt | ... |
Rod Barstowe
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Marian Diamond | ... |
Denise Pryce-Fletcher
(as Marion Diamond)
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| Freddie Jones | ... |
David Curry
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| Peter Jeffrey | ... |
Detective Inspector Kingsley
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Terry Scully | ... |
Nigel Garfield
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| Daphne Heard | ... |
Mrs. McLaren
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| Laurence Hardy | ... |
Minister
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| Joseph Fürst | ... |
Georgiu
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| Brian Wilde | ... |
Taxi Driver
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Ricky Renée | ... |
Myra
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Barry Scott | ... |
Audrey
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Hilda Barry | ... |
Stallholder
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Jack Connell | ... |
Barman
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| Rest of cast listed alphabetically: | |||
| Carolyn Jones | ... |
Houseboat Party Guest (uncredited)
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| Aubrey Morris | ... |
Houseboat Party Guest (uncredited)
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Directed by
| Alan Gibson | ||
Written by
| Jenni Hall | ... | (novel "Ask Agamemnon") |
| Edmund Ward | ... | () |
Produced by
| William Hill | ... | associate producer |
| Josef Shaftel | ... | executive producer |
| Peter Snell | ... | producer |
Music by
| Christopher Gunning | ||
Cinematography by
| Geoffrey Unsworth | ... | (photographed by) |
Editing by
| Ernest Hosler | ||
Editorial Department
| Chris German | ... | assembly editor |
Casting By
| Irene Lamb | ||
Production Design by
| Wilfred Shingleton | ... | (as Wilfrid Shingleton) |
Art Direction by
| Fred Carter | ||
Costume Design by
| Sandy Moss | ||
Makeup Department
| Harry Frampton | ... | make-up |
| Pat McDermott | ... | hairdresser |
Production Management
| Jack Causey | ... | production manager |
Second Unit Director or Assistant Director
| Anthony Waye | ... | assistant director |
Art Department
| Albert Blackshaw | ... | construction manager |
| Bryan Graves | ... | set dresser (as Brian Graves) |
Sound Department
| Les Hammond | ... | sound recordist (as Leslie Hammond) |
| Gerry Humphreys | ... | dubbing mixer |
| Don Sharpe | ... | sound editor |
| Robin O'Donoghue | ... | assistant dubbing mixer (uncredited) |
Camera and Electrical Department
| Peter MacDonald | ... | camera operator |
| Cedric James | ... | clapper loader (uncredited) |
Costume and Wardrobe Department
| Betty Adamson | ... | wardrobe supervisor |
Location Management
| Jim Brennan | ... | location manager |
Music Department
| Marcus Dods | ... | conductor |
Script and Continuity Department
| Marjorie Lavelly | ... | continuity |
Additional Crew
| Derek Horne | ... | assistant to the executive producer |
| Arthur Tarry | ... | production controller |
| Sue Gentle | ... | stand-in: Judy Geeson (uncredited) |
Production Companies
Distributors
- Cinerama Releasing UK (1970) (United Kingdom) (theatrical)
- Cinerama Releasing Corporation (1970) (United States) (theatrical)
- Europafilm AS (1971) (Norway) (theatrical)
- JO-EL (1972) (Mexico) (theatrical)
- American-International Television (AIP-TV) (1974) (United States) (tv) (syndication)
- Prism Entertainment (1988) (United States) (VHS) (as "Twinsanity")
- Odeon Entertainment (2010) (United Kingdom) (DVD)
- Scorpion Releasing (2010) (United States) (DVD)
Special Effects
Other Companies
- General Screen Enterprises (titles)
Storyline
| Plot Summary |
Unnaturally-close twin siblings Jacki (Judy Geeson) and Julian (Martin Potter) become enmeshed in the swinging London scene, where they attract the attention of heavily-indebted gambler Clive (Alexis Kanner). Seeing a way out of his debts, Clive sets Julian up for a blackmail scheme, setting in motion a nightmarish sequence of events. Written by Erich Mees |
| Plot Keywords | |
| Taglines | I Am You when I love. You love - You Are Me when I kill. You kill See more » |
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| Parents Guide | Add content advisory for parents » |
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Additional Details
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Did You Know?
| Trivia | Both the book and this movie were influenced by ancient Greek tragedy. See more » |
| Movie Connections | Featured in A Devil in Spain: An Interview with Judy Geeson (2015). See more » |
| Soundtracks | Goodbye Gemini See more » |
| Quotes |
David Curry:
You and I should feel like two old tombstones, my dear. If we're not careful, someone might come up and inscribe us. See more » |