Silent Madness

A determined psychiatrist at the New Jersey institution who uncovers the fatal release error. She bravely goes undercover as a former sorority member to investigate the murders and follows the trail to the sorority house, risking her safety to expose the truth.

The local lawman who initially resists intervention because hospital officials claim Howard is dead. He represents the friction between law enforcement and institutional authorities, gradually facing pressure as the danger escalates.

The sorority house mother whose warm persona masks a dark secret. She turns out to be Howard's mother and the killer of the hazing victims, revealing a deep-rooted motive linked to past events.

A sorority sister who interacts with Mark and becomes part of the plan to uncover Howard. She embodies the campus social world that becomes entangled with the investigation.

A journalist who assists Gilmore by providing information and helping coordinate the undercover operation. He acts as a bridge between the hospital's secrets and the wider community.

Susan's boyfriend who is among those killed in the lake, illustrating the killer's reach beyond the sorority and into personal lives.

A sorority sister who is slain during the killer's rampage, representing the human cost of the unfolding horror.

A sorority sister who becomes a victim in the slashing tension of the killer's spree.

One of the sorority sisters who dies early in the film along with her boyfriend, marking the start of the horror.

An unruly patient released by a computer error who embarks on a murder spree at the sorority house and beyond.

A hospital attendant who is sent to deal with Gilmore and Howard; he is killed during the pursuit and latently linked to the film's dark turns.

Another hospital attendant who accompanies the pursuit; he is killed as the danger closes in.