The Sentinel (1977) Timeline Explained – Every Event in Order

Alison was chosen because of her history of suicide attempts and her family lineage. The film reveals she is part of a chain of people destined to become Sentinels, those who guard the gateway to Hell. Her past trauma and vulnerability made her the next candidate to take on this role, with the demons believing her soul would be easier to claim.

Foreshadowing: Earlier, Alison's frequent fainting spells and psychological distress signal her vulnerability to supernatural forces.

• Alison Parker
• Sentinel role
• suicide attempts
• chosen one
• destiny

The Sentinel is a guardian tasked with preventing demons from escaping through the brownstone, which serves as a gateway to Hell. Sentinels are priests and laypeople who carry a cross and maintain a constant vigil to keep the portal sealed. When one Sentinel dies or is weakened, another must be chosen to take their place.

Foreshadowing: Father Halliran's constant watch at his window foreshadows the Sentinel's eternal vigilance.

• Sentinel
• guardian
• Hell gateway
• demon
• priest
• cross
• vigilance

Charles Chazen is revealed to be a demon or minion of Hell disguised as a human neighbor. He attempts to persuade Alison to join Michael in Hell rather than accept her role as Sentinel. His benign elderly appearance is part of the supernatural deception surrounding the brownstone.

Foreshadowing: Chazen's initial projection of 'quiet menace' hints at his true demonic nature.

• Charles Chazen
• demon
• Hell
• minion
• supernatural deception

The rental agent Miss Logan tells Alison that only Father Halliran and one other tenant live in the building, despite Alison seeing multiple neighbors. This is because the other 'residents', Chazen, Gerde, and Sandra, are actually deceased murderers and supernatural entities appearing as part of the building's illusion to confuse and manipulate Alison.

Foreshadowing: The eerie atmosphere and strange neighbors establish early that the building exists beyond normal reality.

• brownstone
• tenants
• Miss Logan
• supernatural illusion
• Halliran

Michael Lerman is killed by Monsignor Franchino after attempting to strangle Father Halliran. Michael had broken into the Diocesan office to uncover the truth about the building and discovered Alison's fate as the next Sentinel. His death occurs during the climactic confrontation when he tries to stop the supernatural events.

Foreshadowing: Michael's investigation into the Diocesan files and his growing desperation foreshadow his violent end.

• Michael Lerman
• Monsignor Franchino
• death
• killed
• Halliran

James Brenner, the corrupt detective hired by Michael to investigate the building, is found stabbed to death. While the police initially suspect Alison may have killed him, the truth revealed later is that the supernatural forces within the brownstone were responsible, linking his death to the demonic conspiracy.

Foreshadowing: Brenner's involvement in the investigation draws him deeper into the supernatural danger.

• James Brenner
• detective
• death
• stabbed
• murder investigation

Alison develops the ability to read Latin words that appear invisibly to others because she is being chosen as the next Sentinel. This ability signals her awakening to the supernatural world and her connection to the religious order guarding the Hell gateway. The Latin text represents the ancient spells and warnings binding the portal.

Foreshadowing: Alison's troubling physical symptoms and feeling of being watched coincide with her emerging abilities.

• Latin
• supernatural ability
• Sentinel
• perception
• vision

The cat birthday party for Chazen's cat reveals that the guests are actually deceased murderers. This surreal event serves as a turning point where Alison realizes the building harbors dark secrets and that the neighbors are not what they appear to be, deepening the mystery surrounding the brownstone.

Foreshadowing: The party is described as a 'surreal microcosm' hinting at hidden sins and hidden lives.

• cat party
• Chazen
• deceased guests
• murderers
• revelation
• brownstone

Alison encounters the animated corpse of her deceased father as a supernatural apparition sent by the demonic forces in the brownstone. This terrifying encounter is meant to destabilize her psychologically and draw her deeper into the supernatural conflict. She defends herself by stabbing the apparition, which leads to her hospitalization.

Foreshadowing: Alison's childhood trauma and her father's death are introduced early as key elements of her backstory.

• father
• apparition
• corpse
• supernatural attack
• Alison
• hospital

The brownstone serves as a literal gateway to Hell, a portal that demons use to enter the mortal world. For generations, Sentinels have guarded this threshold to prevent demonic escape. The building's supernatural nature explains the strange occurrences, illusions, and the presence of demonic entities like Chazen.

Foreshadowing: The eerie noises from the walls and the sense of being watched hint at the building's darker purpose.

• brownstone
• gateway
• Hell
• portal
• demons
• Sentinel
• Halliran

Alison accepts her role as the new Sentinel, taking the cross from Halliran and choosing to guard the gateway to Hell rather than surrender to darkness. In the aftermath, she becomes a blind nun who sits at the top window of the new building, watching over the city, a bittersweet ending of chosen sacrifice and eternal vigilance.

Foreshadowing: Alison's internal battle between joining Michael in Hell or accepting her duty builds to this climactic decision.

• Alison
• ending
• nun
• Sentinel
• blind
• sacrifice
• window
• vigil

The brownstone is demolished and replaced by a modern apartment complex, symbolizing how the past can be cleared away. However, Miss Logan continues showing units to new tenants, describing two distinct neighbors, a violinist and a reclusive nun, hinting that the cycle of the Sentinel continues with new inhabitants.

Foreshadowing: The final scene shows Alison as a nun in the new building, suggesting the pattern repeats.

• brownstone
• demolition
• new building
• apartment
• Miss Logan
• nun
• cycle

Father Halliran is the current Sentinel, a blind priest who has guarded the Hell gateway for generations. He sits at his window watching the street as part of his vigil. As the demons push toward the surface, Halliran struggles to maintain his duty until Alison can be convinced to take over as the new Sentinel.

Foreshadowing: His constant presence at the window from the beginning establishes his role as watchful guardian.

• Father Halliran
• blind priest
• Sentinel
• guardian
• window
• vigil