Death Line

Patricia is a university student and Alex’s partner who finds the unconscious man and becomes the moral center of the duo. She is observant, practical, and resourceful, often taking decisive action under pressure. Her courage is tested as she navigates the threats of the underground and the possibility of betrayal, yet she remains determined to survive and look out for Alex.

Alex is an American exchange student and Patricia’s partner who pairs curiosity with fear when danger surfaces. He is quick to act, capable of fighting back, and protective of Patricia, even as he wrestles with confusion and distrust from authorities. His journey through the tunnels culminates in a tense, physically demanding confrontation with the cannibal.

Inspector Calhoun is the persistent detective assigned to the disappearance, skeptical of suspects and quick to consider the broader history of the Underground. He balances procedural restraint with a willingness to follow unsettling leads that point to a deeper, historical horror beneath the city. His approach contrasts with Patricia and Alex’s direct involvement in the danger below.

James Manfred O.B.E. is the man whose card triggers the investigation after he disappears, signaling that a figure of status has fallen into the underground horror. His apparent prestige adds a twist to the mystery as investigators try to untangle motive and identity from the surface narrative. His fate becomes a catalyst for revealing the underground family’s grisly history.

A silent, aphasic inhabitant of the underground tunnels, he embodies the survivalist horror of the cavern-dwelling lineage. His violent outbursts and elusive communication create a chilling antagonist who embodies the subterranean myth. He mutters the warning phrase mind the doors, underscoring the film’s tension between routine urban life and lurking danger.