8 user 17 critic

Las ratas no duermen de noche (1976)

A mad doctor performs a head transplant on an injured criminal, which results in him being even more dangerous and murderous than before.


(as John Fortuny)


(as John Fortuny), (as A.L. Mariaux) | 1 more credit »
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Credited cast:
Jack Surnett (as Paul Nash)
Silvia Solar ...
Ana (as Sylvia Solar)
Olivier Mathot ...
Henry (as Oliver Matot)
Evelyne Scott ...
Barbara (as Evelyn Scott)
Claude Boisson ...
Paul (as Yul Sanders)
Rest of cast listed alphabetically:
Gilda Arancio ...
Ingrid (as Gilda Anderson)
Pierre Biet ...
Monique Gérard ...
La Bouquetiere
Alain Hardy ...
Víctor Israel ...
Richard Kolin ...
Antonia Lotito ...
Roberto Mauri ...
Le Sadique / the Sadist
César Ojinaga
Carlos Otero ...
Doc Ritter


A mad doctor performs a head transplant on an injured criminal, which results in him being even more dangerous and murderous than before.

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Release Date:

7 June 1976 (Spain)  »

Also Known As:

Crimson  »

Company Credits

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Technical Specs

Sound Mix:


Aspect Ratio:

1.85 : 1
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Did You Know?


Karl is shot by one of the Sadist's henchmen through an upstairs window. However, in a later shot the window is intact. See more »


Featured in Mad Scientist Theatre: 50 Movie Mega Pack (2016) See more »

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User Reviews

Black Friday Euro Style
25 October 2013 | by (Louisville, KY) – See all my reviews

Crimson (1973)

** (out of 4)

Paul Naschy would often borrow elements from the Universal monster movies and he does so again, although with this film it borrows from BLACK Friday. In the movie Naschy plays a gangster who is shot in the head during a heist. His crew manages to find a doctor that could save his life but he's going to need to brain from another human. The crew decide to get the brain of a rival gangster known as The Sadist and while this transplant saves their bosses life, it also causes him to be even more dangerous to those around him. CRIMSON is also known as several other titles including THE MAN WITH THE SEVERED HEAD as well as THE RATS COME OUT AT NIGHT. Those expecting a straight horror film are going to be disappointed as will those coming into the picture expecting to see a lot of Naschy. The Euro legend gets top billing but sadly he appears in very little of the actual picture and it almost seems like his scenes weren't a part of the original screenplay and were just added to try and cash-in on his appeal at the time. CRIMSON isn't a bad movie but it is a rather needless one that doesn't add up to much in the end. I think the biggest problem is the screenplay that just doesn't know what it wants to do. The Euro-Crime genre is certainly on full display here but all of the elements are rather weak here. The stuff dealing with the gangsters really isn't interesting and you certainly never fear these guys. The horror elements are also incredibly weak because very little is done with them. Naschy has a bandage on his head, screams about his brain not working right and every once in a while he briefly acts out. He certainly doesn't get much to work with performance wise and that's true for the rest of the cast. To be fair, the English dubbing certainly doesn't help because it makes all of these tough gangsters sound like school girls. When the film was released in France it contained some more graphic sex scenes but this wasn't the version I watched but I'm going to guess that these scenes certainly livened up the picture a bit, which is something it certainly needed.

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