A top notch horror thriller for it's time when it was released in the 1950s.....not a slasher film, those types of movies were not even considered during that time period....story concerns some very brutal murders of beautiful young women in and around some Paris France nightclubs in the very early 1900s....women are mutilated and the local gendarmes (police) are mystified....how could they be so badly beat up and decimated....the local police question everyone and the local inspector pays too much attention looking for suspects at the local college.....no clues are to be found.... finally after another gruesome murder a local student is implicated since he was near the area looking for the murderer himself...the local cops are very anxious to pin the murder on the student since they have no other suspects and the heat is on to find the killer (s). After some serious head scratching the student, Steve Forrest puts two and two together and figures that no man could be physically capable of crashing through glass ceilings and mutilating and stuffing corpses up a chimney and severing limbs....the evidence points to an animal such as a gorilla...naturally the local gendarmes do not believe it a first. After the gorilla escapes from his local pen at the zoo and murders again, police have to release Forrest from custody. Evidence points to the local zoo and its curator Professor Marais (Karl Malden) Police quickly rush to the zoo to find the ape carrying around another potential victim, the fiancé of Forrest. The cops kill the gorilla and in a somewhat funny scene the ape lands on Malden and gives him a Mike Tyson working over...ugh!! This film was released in 3D in 1954 during a period when Hollywood was trying to figure out how to keep its audiences away from television.....3D was a silly gimmick that gave a few thrills by wearing plastic glasses to enlarge and somewhat make more believable the image on the screen...it looked like the image was coming right at the viewer more explicitly than in regular format. All in all this is a good, decent horror thriller for it's time...the music composed by David Buttolph is pretty good and adds a touch to the mystery. The guy in the gorilla costume is very believable and you feel almost compassionate seeing the gorilla in his cage responding to affection from the fiancé of Forrest. Decent little thriller.