The Sentinel

A fashion model with a history of suicide attempts stemming from childhood trauma, Alison moves into the Brooklyn brownstone and soon confronts a rising spectrum of physical ailments and paranormal disturbances. Her arc centers on parsing trauma, resilience, and an uncanny awakening that forces her to assume a dangerous guardianship. She grows from a frightened tenant into a decisive figure who must confront the demonic gateway within her home.

A blind priest occupying the top-floor apartment, Halliran exudes an enigmatic blend of pious calm and ominous foreboding. He is revealed as part of a lineage of clergy connected to a larger, sinister scheme involving the house. His presence anchors the supernatural mechanism of the story, and his fate intersects with Alison’s ascent as Sentinel.

An eccentric, elderly neighbor whose oddities mask deeper malevolence and a role in the house’s hellish gatekeeping. He embodies the film’s theme of unsettling exterior charm masking dangerous truth. His interactions with Alison illuminate the building’s social labyrinth and the occult order at work.

Part of the lesbian couple next door, Gerde’s confident, enigmatic aura contributes to the building’s strange social tapestry. Her presence signals the house’s loyalty to hidden rules and the residents who occupy its rooms. She and Sandra add to the sense that the brownstone houses a world beyond ordinary perception.

Sandra is part of the same neighboring couple and features in a provocative subplot that underscores themes of desire, exposure, and the dangerous intimacy the house provokes. Her behavior becomes a signal of the building’s unsettling influence and the blurred lines between normal life and occult pressure.

The rental agent who oversees the building, Miss Logan is practical and seemingly unflappable, yet she holds crucial knowledge about the property and its occupants. Her role helps reveal the limits of normal bureaucracy in the face of supernatural danger. She serves as a link between the tenants and the larger, hidden order governing the house.

Alison’s lawyer boyfriend, whose ambition and entanglement with Alison complicate the moral landscape. He becomes a suspect in the investigation and a key catalyst for the film’s conflict, blurring lines between love, loyalty, and crime. His actions contribute to the story’s themes of guilt and betrayal.

A crooked detective friend of Michael who investigates the peculiar happenings around the building. Brenner’s involvement adds a noir layer to the mystery, and his murder, tied to the larger plot, cements the sense that the house harbors real peril behind ordinary doors.

A Catholic official who uncovers a disturbing pattern linking Halliran to a sequence of suicides among clergy. He embodies institutional authority and provides crucial exposition about the house’s occult history. Franchino’s revelations frame the stakes of Alison’s role as Sentinel.

One of the police detectives drawn into the case, Gatz represents the entry point for the investigation outside the supernatural circle. His presence helps anchor the story’s detective intrigue and offers a grounded perspective on the unfolding anomalies within the brownstone.