Leo Kroll is a mother-fixated lab technician who collects dolls and moves through life with the cold precision of a serial killer. Heerries the line between routine and danger as he becomes the prime suspect in a string of nurse murders, yet the police release him, unable to pin him down. The tension tightens when he fixates on Clara Thomas, the nurse who has been caring for his possessive mother in the hospital after a heart attack. In a chilling move, he hints at his next target and leaves behind a doll at the scene, a taunting clue that will haunt the investigation.
A troubling subplot threads through the narrative: Kroll grows inexplicably drawn to Tally, one of the girls who works at the amusement park stall where he won the doll. The amusement park, and its colorful but eerie backdrop, becomes a stage for his creeping fixation as he watches the world with a predator’s patience. The warded calm of his life is broken when a subtle, almost affectionate interest in Tally surfaces, creating a dangerous juxtaposition between affection and menace. Eggerton, a park standby, moves through the scene as a quiet witness to Kroll’s unsettling adventures.
Kroll is interrogated again, but this time he passes a lie detector test and is released once more. He makes a tense trip to visit his mother in the hospital and reveals how he killed Clara, a confession that triggers a fatal heart attack for her. Back at the amusement park, the killer notices Barbara Wells, Barbara Wells a co-worker of Tally, lingering near the edge of the investigation and talking with the police. His anxiety climbs as he talks to Barbara about the police, and he becomes visibly unsettled, missing ring after ring as he plays the game. When Barbara imitates one of the dolls by saying, > "Mama," the moment cuts deep into Kroll, dredging up his mother’s voice and driving him past the breaking point.
The confrontation escalates as Kroll makes his way to Barbara’s apartment and strangles her while she steps out of the shower. The murder of a park-worker, not a nurse, confuses the police and allows the killer to slip through their grasp for a time. Meanwhile, with his mother gone, Kroll feels briefly free, and his hatred for women seems to soften—a dangerous illusion that paves the way for a final, fateful confrontation.
He ventures to see Tally again, asking for a future together, and is met with rejection. The rejection tightens the noose of his own convictions, and he becomes convinced that every harsh thing his mother told him about women is true. The police finally connect the dots and locate their strangler; they fear Tally might be the next target and install listening devices in her room to monitor him. As Tally begins packing to leave town, she accidentally covers the bug, and the room becomes silent to the outside world.
When Kroll finally emerges, the trap snaps shut. He closes in on Tally, the room filling with the tension of what looks like the end. The police burst in and open fire, wounding him as he crashes through the window to his death. Whether Tally survives remains unclear, leaving a haunting sense of ambiguity at the film’s end.
This dark, methodical thriller threads a chilling portrait of a man whose deep-seated resentment of women and his mother’s controlling voice drive a cycle of violence. It plays out against a stark, night-haunted cityscape and a carnival world that mirrors the killer’s twisted psyche, where dolls and echoes of motherhood become instruments of fear and tragedy.
