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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.


Alan Gibson


Jenni Hall (novel), Edmund Ward

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Cast overview, first billed only:
Judy Geeson ... Jacki / Sister
Martin Potter ... Julian / Brother
Michael Redgrave ... James Harrington-Smith
Alexis Kanner ... Clive / Gambler
Mike Pratt ... Rod Barstowe
Marian Diamond Marian Diamond ... Denise Pryce-Fletcher (as Marion Diamond)
Freddie Jones ... David Curry
Peter Jeffrey ... Detective Inspector Kingsley
Terry Scully Terry Scully ... Nigel Garfield
Daphne Heard Daphne Heard ... Mrs. McLaren
Laurence Hardy Laurence Hardy ... Minister
Joseph Fürst ... Georgiu
Brian Wilde ... Taxi Driver
Ricky Renée Ricky Renée ... Myra
Barry Scott Barry Scott ... Audrey


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


Enter the weird, terrifying world of the Gemini twins! See more »


R | See all certifications »






Release Date:

25 September 1970 (USA) See more »

Also Known As:

Twinsanity See more »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:



Color (Eastmancolor)

Aspect Ratio:

1.78 : 1
See full technical specs »

Did You Know?


Italian censorship visa # 63428 delivered on 31-10-1973. See more »


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 »


Referenced in The Oral Generation (1970) 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. And good riddance.
17 April 2017 | by BA_HarrisonSee all my reviews

Infantile psychotic twins Jacki and Julian (Judy Geeson and Martin Potter) arrive in London, immediately arranging an accident for their grouchy landlady so that they can have the run of the place. The siblings then set about experiencing the swinging London party scene, where they meet louche rogue Clive (Alexis Kanner, sporting some impressive mutton-chops). After Clive is roughed up by a bookmaker to whom he owes £400, he tricks Julian into bed with a pair of transvestites, takes a few photos and proceeds to blackmail the young man. However, instead of getting cash for his troubles, Clive gets knifed in the neck instead.

As a child of the '70s, I have an affinity with films from that era, especially those set in the UK, but Goodbye Gemini was a tough one to endure. It's horrible, hippy nonsense that features hedonistic characters hard to sympathise with, atrocious dialogue, and incomprehensible behaviour from all involved. An incestuous relationship between the inseparable twins is hinted at, which adds an edginess to proceedings, the music is groovy, and there are a couple of outrageously camp homosexuals who are mildly amusing (one wears a bright pink shirt and uses the word 'ducky' a lot—you don't get much more '70s than that!), but there really is very little else worthy of mention.

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