The Guilty

Roommate with Johnny Dixon whose loyalty to his friend masks jealousy and moral ambiguity. He pressures Johnny's alibi while becoming more unsettled as the case unfolds. In the end, he is revealed to have killed Linda, believing she was Estelle, a twist that exposes his capacity for deception.

Nervous war veteran with memory issues who clings to Linda and resents Estelle's interference. His volatile state makes him vulnerable to manipulation and misinterpretation by others. He ultimately faces the risk of harm until the case clears his name.

Twin sisters whose entangled relationships with Johnny propel the plot. Estelle schemes to win Johnny away from Linda, while Linda's presence and love complicate the triangle. The sisters are pivotal to the motive, even after Linda's murder, as Estelle's memories and actions influence how others perceive the case.

The seasoned detective who pieces together the evidence and confronts Mike with the morgue revelation. He uses tough persuasion to force confessions and settle alibis, and he ultimately exposes the truth that Linda was murdered by Mike. He leads Johnny's arrest and helps reveal Tremholt's true involvement.

Older, possessive man renting a room who has an unrequited love for Estelle. He becomes a suspect due to his proximity to Estelle and the strange interactions with Linda's case, and he attempts to complicate the situation by urging an arrest. His true role is revealed later by Heller.

The janitor who discovers Linda's necklace in the incinerator chute, connecting the crime scene to the apartment. He serves as a key clue-giver whose discovery shifts the investigation. His quiet presence anchors the mystery's physical trail.

Bar owner who runs the central location where many conversations and conflicts unfold. His establishment acts as a social hub that draws the characters together and intensifies the plot.

Estelle and Linda's mother who embodies a protective, often anxious presence within the family dynamic and adds to the emotional tensions surrounding the sisters' complicated relationship with Johnny.

A neighborhood figure who interacts with the main cast, contributing to the community atmosphere and providing a broader social context for the events.