Shriek of the Mutilated  Shriek of the Mutilated, also known as Mutilated and Scream of the Snowbeast, is a 1974 American horror film directed by Michael Findlay. The plot focuses on a field trip by Professor Ernst Prell to investigate Yeti sightings, along with four graduate students: Keith Henshaw, Karen Hunter, Tom Nash and Lynn Kelly. The night before the trip, the professor invites Keith to dinner at a restaurant, where he samples an exotic dish named "gin sung." The rest of Dr. Prell's students attend an off-campus party where they encounter a former student, turned alcoholic groundskeeper, named Spencer St. Clair, who is there with his wife April. Clair proceeds to tell everyone within earshot the story of Prell's last Yeti-seeking field trip, which only he and the professor survived. After the party, Spencer continues to drink, and upon returning home fights with his wife and cuts her throat with an electric carving knife. Afterwards, he climbs into the bathtub fully clothed. He is killed by his not quite dead wife, who drags a toaster into the bathroom and dumps it into the bath, electrocuting him. In the morning, the professor travels by van with his students to Boot Island, where his friend Dr. Karl Werner lives. Werner has recently seen the Yeti on his island, and conjectures that he was marooned there by melting winter ice. He introduces the others to a mute Native American manservant named Laughing Crow. The group have dinner, which is again "gin sung," then go to sleep after one of the students, Tom, sings a song about the Yeti. The next day, the professor and his students begin their search in the woods of the island. Tom sneaks off to go hunting and is killed by the Yeti. The rest of the group look for Tom the next morning. Karen finds only his rifle and his severed leg. Meanwhile, Lynn goes into Dr. Werner's greenhouse and sees something that frightens her; she runs into the woods and is also killed by the Yeti. At the house, the remaining students find that the phone is out of order. The professor decides to use Tom's leg as bait to lure the Yeti into a trap. The plan fails, however, as Prell returns to the house claiming he was knocked down by the monster, who escapes with the leg in its jaws. Prell then decides to try again, using Lynn's body as bait.