The episode opens with a horrifying scene. Police officers have discovered a grisly collection of body parts, stored in boxes and concealed within the walls of a Milwaukee apartment. This gruesome find immediately indicates a mass murder, and the authorities are determined to bring the perpetrator to justice.

As the investigation unfolds, the police identify the suspect: Jeffrey Lionel Dahmer. Dahmer, who already has a criminal history, is a name that is familiar to law enforcement. The evidence against him is overwhelming, including a barrel of acid found at the crime scene. The primary focus now shifts to identifying the numerous victims.
Dahmer is taken into custody and questioned by the police. Surprisingly, he waives his right to an attorney and chooses to be honest about his crimes. In a chilling confession, Dahmer details the horrific acts he has committed.
To understand the origins of Dahmer's dark deeds, the episode flashes back to his troubled childhood. We learn about his mother's suicide attempt and his father's absence, which left him feeling isolated and alone. As a young boy, Dahmer developed a fascination with dead animals and dissection, a disturbing interest that would foreshadow his later crimes.
As Dahmer grew older, his social awkwardness and isolation became more pronounced. He exhibited a growing interest in biology and anatomy, and his fascination with the human body intensified.
In adulthood, Dahmer's struggles with loneliness and alcoholism deepened. He returned to live with his grandmother, and his behavior began to exhibit increasingly unusual patterns. Dahmer developed a disturbing obsession with controlling others and creating a submissive companion.
To satisfy his twisted desires, Dahmer began to lure young men to his apartment. He offered them alcohol and the promise of money, and once they were under his influence, he would carry out his horrific experiments. Dahmer's goal was to create a "zombie," a subservient creature that would meet his every need.
One of Dahmer's victims managed to escape from his apartment, leading to police involvement. However, Dahmer's manipulative skills allowed him to deceive the officers. He convinced them that the victim was simply his intoxicated boyfriend, and the police left without realizing the danger.
As the episode draws to a close, we see that Dahmer's mental state is deteriorating. His obsession with control and his desire to create a submissive companion are becoming more intense. The police, unaware of the true extent of Dahmer's crimes, have unknowingly left a victim in his custody, setting the stage for further horrors.