Splatter University

A sociology teacher newly hired at St. Trinian's who becomes entangled in the campus murders. She forms a cautious alliance with Cynthia and Mark as she investigates the killings, showing determination and courage. Her pursuit of the truth leads to a dangerous confrontation with the killer, culminating in tragedy.

The handicapped priest headmaster of St. Trinian's who masks a murderous alter ego, Daniel Grayham. He uses religious authority and misogynistic motives to justify a string of killings. His plan to frame Mark is foiled, and he is ultimately sent to an insane asylum.

A colleague at the college who becomes the object of Julie's suspicion during the murders. He is portrayed as cautious and capable, aiding the investigation rather than the killer. He arrives during the climactic moments and helps bring the truth to light as Janson's scheme unravels.

Julie's friend and fellow teacher who voices suspicions about Mark and assists in the investigation. She communicates via late-night calls, heightening Julie's unease. Cynthia becomes a casualty of the killer, underscoring the campus danger.

A fellow teacher at St. Trinian's who appears in the background as the murders unfold. He anchors the faculty dynamic and contributes to the sense that danger can emerge from within the school.

A staff member associated with the college environment, helping to flesh out the close-knit campus community. Her presence emphasizes the ordinary life that intersects with extraordinary violence.

A student at St. Trinian's who witnesses campus events and becomes part of the investigation network surrounding the killings.

A student at St. Trinian's who is among the two female students targeted by the killer. Her death highlights the threat to the student body and escalates the investigation's urgency.