¨Las ratas no duermen de noche¨ is starred by Spanish legend Paul Naschy. A group of thieves, led by Jack Surnett (Paul Naschy) and his henchmen Henry (Olivier Mathot), Karl (Victor Israel) and Paul (Yul Sanders), are pursued by the police after a failed attempt. Of stealing a safe with jewelry. While fleeing, Surnett is shot in the head. To try to prevent his certain death, his criminal cronies take him to the drunken doctor Dr. Ritter (Carlos Otero), who owes the gang favors. Unable to help him due to the severity of the injury, he turns to a scientist friend, Professor Teets (Richard Palmer), who works on scientific research on brain transplants, with the help of his wife Ana (Sylvia Solar). But the experiment making Surnett even more dangerous and murderous than before. To carry out the strange transplant surgery, the criminals, with the help of Surnett's girlfriend, Ingrid (Gilda Anderson), decide to pursue a rival enemy known as "El Sádico" (Roberto Mauri), to eliminate him and use his brain. However, they will have to face the vengeful fury of the rival gang formed, among others, by second-in-command Willy and the sadist's girlfriend, Barbara (Evelyne Scott). The transplanted mobster boss begins to experience side effects with mental instability, now becoming even more violent, dangerous and unpredictable.
Typical crime thriller with suspense, intrigue, red herrings, shootouts and in which a delinquent is undergone a weird surgical operation. This is more of a thriller than your typical Paul Naschy horror film. It's a routine movie basically about two gangs at war and the leader of one of them who suffers a brain transplant with fatal consequences. Crimson - The Color of Terror is a police thriller with a dispute between rival gangs of criminals with a basic idea of horror and messy science fiction only as a backdrop, through the element of the "mad scientist" and the brain transplant experiences for the supposed good of humanity. A mad doctor performs a head transplant on an injured criminal, but the already fearsome aggressor Surnett, after being transplanted with the enemy's brain. It has little violence and no blood , which does not justify the choice of the title, which emphasizes the color of blood, and the deaths occur almost exclusively in shootouts. The atmosphere of horror is discreet and limited to the moments in the scientist's strange laboratory and Surnett's transformation into an even more ruthless killer. There is an unnecessary scene, which contributes nothing to the story, with a dance number by a woman and two men in a nightclub, which seems more like a way to complete the film's footage. As a trivia, the film's story is similar to and was certainly inspired by "Black Friday" (1940), a black-and-white "Universal" production starring horror icons Boris Karloff and Bela Lugosi. Here Paul Naschy has little presence, appearing on the scene only at first in the failed robbery attempt, and then is undergone a surgery resulting in a huge psychopathic behavior provoked by the influence of the brain of his enemy. There'are some attractives faces in the cast, most of them regulars in the 60s, 70s, 80s co-productiones (Terror, Spaghetti, Euro-spy, softcore), such as : Silvia Solar, Olivier Mathot, Evelyne Scott, Víctor Israel, Cesar Ojinága, Carlos Otero, actor/director Robert Mauri and Ricardo Palmerola who he played for director Fortuny: Palmer ha muerto, Las aventuras de Taxi Key, El pobrecito Draculin.
This mediocre flick results to be a low budget co-production between Merqueriz (Juan Fortuny's production company) and Eurociné of Marius Lesoeur. Among the different alternative titles, it is known in Spain as ¨Las ratas no duermen de noche¨and other titles: Le viol et l'enfer des X (France) L'homme à la tête coupée (France) Crimson, the Color of Blood (World-wide, English title) The Man with the Severed Head (Canada, English title) Crimson (United States), "Rats don't sleep at night" (international title). The motion picture was regularly directed by Spanish filmmaker Juan Fortuny . This Catalonia director was an artisan who wrote/produced/directed some so-so films. He directed and photographed various movies in all kinds of genres , some of them co-producing with other countries as France and Panama , such as : El pobrecito Draculín , Marchands de femmes , Huyendo de sí mismo, Palmer ha muerto , Las aventuras de Taxi Key , Delincuentes , La melodía misteriosa, El rey de la carretera , Huyendo de sí mismo , Unas páginas en negro , Legión de héroes . Rating: 4.5/10 . Only for the satisfaction of collectors and connoisseurs of European fantasy cinema. Very mediocre.
