8 user 25 critic

Goodbye Gemini (1970)

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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Cast overview, first billed only:
James Harrington-Smith
Alexis Kanner ...
Clive Landseer
Rod Barstowe
Marian Diamond ...
Denise Pryce-Fletcher (as Marion Diamond)
David Curry
Detective Inspector Kingsley
Terry Scully ...
Nigel Garfield
Daphne Heard ...
Mrs. McLaren
Laurence Hardy ...
Joseph Fürst ...
Brian Wilde ...
Taxi Driver
Ricky Renée ...
Barry Scott ...


Unnaturally close twin siblings Jacki and Julian become enmeshed in the swinging London scene, where they attract the attention of the heavily endebted gambler Clive. 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 Summary | Add Synopsis


Jacki and Julian have evil twins. Each other. See more »


R | See all certifications »




Release Date:

16 March 1972 (Mexico)  »

Also Known As:

Twinsanity  »

Company Credits

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Technical Specs


Sound Mix:



Aspect Ratio:

1.78 : 1
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Did You Know?


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.
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Referenced in Innocents Abroad (1971) See more »


Tell the World We're Not In
Written by Denis King and Don Black
Performed by The Peddlers
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Frequently Asked Questions

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User Reviews

Goodbye weirdos
15 April 2017 | by (United Kingdom) – See all my reviews

The freak twins, Judy Geeson (Jacki) and Martin Potter (Julian) come to London to stay in a house in Chelsea and they immediately hit the party scene thanks to a meeting with Alexis Kanner (Clive) in a pub. Kanner is strange – he's a nasty conman who uses people but he's not as strange as the twins. Geeson and Potter are both child-like with Geeson laughing way too much at things that aren't funny and Potter being obsessively possessive about his sister. Worse, they love each other – and I mean actually love in an incestuous way that includes a physical relationship. So, it's uncomfortable viewing. The twins exact revenge on a couple of people. Are they untouchable?

This film is way too weird and not particularly enjoyable. You watch because you don't know where it's going but once watched, I think you get rid. It reminded me a bit of "Beyond the valley of the Dolls" but set amongst a seedy London party scene. Both films are not good and dish out some horror as well as peculiar characters that are scary and hard to relate to. Scary in a sexuality scary kind of way. Michael Redgrave (James) pops up in this as a familiar face on TV whilst Mike Pratt (Rodd) is probably the best in the cast as a debt collector.

As a Londoner, I recognized the locales – I spotted Cheyne Walk, Notting Hill Gate and Shepherds Bush Market and I know for a fact that there were hotels like that in Paddington in the 1980s. Dodgy ones. The central characters of the twins were just too weird.

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