The Deadly Triangle poster
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The Deadly Triangle

4.319731h 22mMovieThrillerHorrorMystery

Inspired by "The diabolical" by Clouzot. The life of a woman becomes a sinister nightmare due to the plan drawn up by her husband.

DirectorJoaquín Romero Marchent
WriterJoaquín Romero Marchent
ProducerMiguel Ángel Gil

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The Deadly Triangle was released on December 10, 1973 but we couldn't find it on any streaming service yet. Rights can change — try again later.

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Cast · Directed by Joaquín Romero Marchent

EBErika Blanc
Erika Blanc
Alice Harris
VP
Vicente Parra
John Harris
JGJuan Luis Galiardo
Juan Luis Galiardo
Andrés Larson
ÁLÁgata Lys
Ágata Lys
Margot
ÁMÁngel Menéndez
Ángel Menéndez
MHMaribel Hidalgo
Maribel Hidalgo
FNFrancisco Nieto
Francisco Nieto
CL
Carmen Luján
MD
Marisol Delgado
RL
Ricardo G. Lilló
FV
Francisco José La Vega
Niño

More from Erika Blanc · Lead actress

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2002 · 6.2
Edera
Edera
1992 · 8.3
His Secret Life
His Secret Life
2001 · 7.3
Door Into Darkness
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1973 · 6.8
Lo zio d'America
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2002 · 8.0
Tony Arzenta
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1973 · 6.1
Kill, Baby... Kill!
Kill, Baby... Kill!
1966 · 6.9
Sartana's Here... Trade Your Pistol for a Coffin
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1970 · 6.4
So Sweet... So Perverse
So Sweet... So Perverse
1969 · 5.6
Racconti fantastici
Racconti fantastici
1979 · 7.0
See all fromErika Blanc

More from Vicente Parra · Co-star actor

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1971 · 6.2
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1956 · 6.0
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1978 · 3.7
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1972 · 6.2
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1956 · 7.0
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1967 · 5.7
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See all fromVicente Parra

More from Joaquín Romero Marchent · Director

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1976 · 7.3
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1953 · 9.0
The Pitiless Three
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1964 · 5.9
Cut-Throats Nine
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1971 · 6.5
The Implacable Three
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1963 · 5.2
Dollars for a Fast Gun
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1966 · 6.0
Seven Hours of Gunfire
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The Coyote
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1955 · 6.4
Hour of Death
Hour of Death
1964 · 5.1
I Do Not Forgive... I Kill!
I Do Not Forgive... I Kill!
1968 · 7.5
See all fromJoaquín Romero Marchent

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The Deadly Triangle — streaming FAQ

Which OTT platform streams The Deadly Triangle?

The Deadly Triangle isn't streaming anywhere in United Kingdom yet.

Is The Deadly Triangle on Netflix?

No, The Deadly Triangle is not on Netflix in United Kingdom as of September 2026.

Is The Deadly Triangle on Amazon Prime Video?

No, The Deadly Triangle isn't on Amazon Prime Video in United Kingdom right now.

Where can I watch The Deadly Triangle for free?

The Deadly Triangle isn't streaming in United Kingdom yet, so there's no way to watch it free at the moment.

What is the OTT release date for The Deadly Triangle?

The Deadly Triangle hasn't started streaming in United Kingdom yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around January 28, 1974. This is a prediction, not a confirmed date.