THE NEANDERTHAL MAN

At home in California's High Sierras, Prof. Clifford Groves hears glass breaking and looks up in fear from his book, Neanderthal Man and the Stone Age. He finds his lab window smashed and the room wrecked. The noise awakens his adult daughter Jan. Groves sends her back to bed.

Meanwhile, Mr. Wheeler spots an unusually large tiger while hunting. That night at Webb's Cafe, the locals tease him. "Three times the size of a mountain lion and got the tusks the size of an elephant- it ain't natural," says Danny. Game Warden George Oakes comes in. Wheeler leaves, and Charlie Webb tells him Wheeler's story. Driving home, a sabretooth tiger jumps onto Oakes' car. He scares it off by honking the car's horn.

Oakes and Sheriff Andy Andrews make plaster casts of the animal's footprints. Oakes takes one to Dr. Ross Harkness in Los Angeles. Oakes eventually convinces Harkness that the cast is real. Harkness says he will drive up that weekend to investigate.

When Harkness stops at Webb's, waitress Nola Mason introduces him to Ruth Marshall, who is on her way to see her fiancé, Groves, but is stranded because her car has broken down. Harkness drives her to Groves's house, where Jan tells them that Groves is in LA speaking before the Naturalist's Club.

Groves lectures the club on his theory that Neanderthal man was more intelligent than "modern man" because Neanderthals had bigger brains. The club members scoff at him and demand proof. Groves responds with insults. The chairman adjourns the meeting, telling Groves not to return. Groves angrily says to the empty room that he will show them proof if that is what they want.

Jan invites Harkness to stay at their house. Groves complains about Harkness being there at breakfast, but Ruth insists that he remain. Oakes arrives, and he and Harkness head out to look for the sabretooth. They find it and kill it, but Harkness says he fears there are others.

Back at the lab, Ruth and Groves quarrel about their deteriorating relationship. He throws her out, then injects himself with the serum he has been using to turn cats into sabretooth tigers. He reverts to the Neanderthal Man. Out in the woods, he kills hunter Jim Newcomb and his dog, then returns home and becomes Groves again. He writes in his diary that this most recent regression was the fastest yet, and the recovery was the slowest. Then he turns into the Neanderthal Man and runs off. Harkness sneaks into Groves's lab and finds photos that Groves took as he experimentally regressed Celia, his deaf-mute maid.

Buck Hastings and Nola go on a picnic, and he snaps glamour shots of her. But the Neanderthal Man kills him while Nola is behind a bush changing clothes. As she looks at Buck, dead on the ground, the Neanderthal Man carries her off, kicking and screaming.

Oakes phones Jan and says Buck has been murdered. During the call, Celia sees Nola outside. Harkness carries Nola in. She is hysterical and her clothes are torn. Buck, she says, was killed by something "not human." Then she cries, "He tried to pull me by my hair and then he ... then he ..." and collapses into tears, wailing. Jan calls Webb's, tells Webb what happened and asks him to send for the local MD, Dr. Fairchild.

Harkness shows Jan and Celia the photos of Celia being regressed to a Neanderthal Woman. Celia signs that she has no memory of it. Harkness then notices that one of the lab cats starts to yowl whenever it sees a syringe. When he injects it, it turns into a sabretooth and escapes.

Jan and Harkness read Groves' diary. He wrote that the serum works on cats, not dogs, and not fully on women but on men. They set out to find the Neanderthal Man before the State Police and Sheriff's posse can. They stop at Webb's and see that the Neanderthal Man has injured Webb. Jan says that Ruth's door has been smashed in and that she's gone. "I reckon he got her, too," says a dazed Webb.

Dr. Fairchild tells Harkness and Jan that the posse has cornered the Neanderthal Man in a cave, and Ruth is with him. Alone and unarmed, Harkness walks to the cave and tells Ruth to let the Neanderthal Man run away. He does, but a sabretooth tiger jumps him. The posse holds off shooting for a while as the Neanderthal Man is being mauled.

Now at home on his deathbed, the Neanderthal Man changes back to Groves one final time and utters his last words: "Better ... this ...way."