Hell House LLC

Alex remained determined to open Hell House on schedule despite growing supernatural phenomena and crew members' fears because he was obsessed with completing the project. His loyalty to the vision and possibly his own ego drove him to press forward, even as Paul contemplated quitting and the haunting intensified. This relentless drive ultimately led to the deadly opening night tragedy.

Earlier in the build, Paul considers quitting due to fear, but his loyalty to Alex keeps him in place, showing Alex's influence over the crew.

Paul vanished after encountering a ghost girl during a late-night scare test. The crew later discovered him in the basement, withdrawn and unresponsive. The footage reveals he was possessed by a supernatural force, and after Mack's death, the possessed Paul slaughtered Sara before cutting his own throat.

Earlier, Paul and Sara appear briefly possessed during strobe tests, hinting at the entity's influence.

The Hotel Abaddon was built by cultist Andrew Tully in Rockland County, who chose the location because the town name 'Abaddon' references a demon guarding the gateway to hell. In 1989, a mother and her 11-year-old daughter disappeared from the hotel. Although Tully was cleared of involvement, the scandal destroyed the hotel's reputation, and he hanged himself shortly after.

Melissa, a scare actor, tells the crew that the hotel is haunted, setting up the supernatural threat.

During the basement finale, Melissa (the actress chained up for the sacrifice scene) was brutally killed by a shadowy ghost cultist. This triggered a panicked stampede among the guests. Tony was slain while trying to protect Melissa, and Mack and Sara fled to the attic where they found Alex hanged. Sara escaped through a window, but Mack was surrounded and killed by shadow cultists.

The basement finale was designed as the attraction's biggest scare, with a chained actress playing a cult sacrifice.

Sara was the sole survivor of the 2009 tragedy, managing to escape through an attic window while Mack was killed by shadow cultists. However, the documentary reveals that she was not truly free, she had been possessed. In the recovered footage, a possessed Paul slaughters Sara after Mack's death, and in the present day, a ghoulish Sara attacks the documentary team in room 2C.

Sara asks the crew to meet her in room 2C, hinting at her true nature.

Authorities described the incident as a "severe malfunction," likely referring to what appeared to be a violent, unexplained event that killed 15 people. In reality, the deaths were caused by shadowy ghost cultists attacking guests during the basement finale, along with supernatural possession affecting the crew. The authorities had no frame of reference for the paranormal reality.

The documentary team investigates the incident five years later, seeking the truth behind the official explanation.

Sara appears to be the sole survivor in 2009, but the documentary reveals she was actually possessed by the same supernatural force that took Paul. Mitchell discovers footage showing that after Mack's death, a possessed Paul kills Sara. Later, in the present day, a ghoulish Sara attacks Diane and her cameraman in room 2C, confirming she became one of the shadow cultists.

Sara suggests the documentary crew enter the Abaddon Hotel, and Mitchell warns them about what he found in the footage.

The documentary team meets a terrifying end. Diane and her cameraman break into the Abaddon Hotel against warnings, ignoring Mitchell's calls to retreat. They discover room 2C and find Sara sitting with her back to them. They try to flee but are attacked by a ghoulish Sara and two shadow cultists, killing them both and bringing the documentary to a chilling close.

Mitchell uncovers the footage of Paul killing Sara, hinting at the danger awaiting the crew.

Andrew Tully was an enigmatic cultist who built the Hotel Abaddon specifically because the location's name, Abaddon, references a demon that guards the gateway to hell. He chose the site for its dark spiritual significance, intending to harness supernatural forces. After the 1989 disappearances and his subsequent suicide, the hotel became abandoned and notorious.

Expert interviews provide context about Tully's motives and the hotel's symbolism.

The recovered footage reveals that Paul was possessed after disappearing in the basement. After Mack is killed by shadow cultists, the possessed Paul brutally slaughters Sara. He then cuts his own throat, dying in a suicide that appears to be driven by the controlling entity. This footage is discovered by Mitchell in the present day.

Paul vanishes after encountering a ghost girl, and is later found withdrawn and unresponsive in the basement.

The shadow cultists attacked because the basement finale replicated their ritual. The haunted house attraction used a chained actress playing a cult sacrifice, and this apparently triggered the actual ghost cultists tied to Andrew Tully's dark history. They brutally killed Melissa (the actress) and other staff members, treating it as a real sacrifice being interrupted.

The hotel's history involves Tully's cult activities, and the basement setup mirrors a real cult ritual.

Room 2C is significant because it's where Sara tells the documentary crew she'll be waiting for them. When Diane and her cameraman find the room, they discover Sara sitting with her back to them, but she's now ghoulish and possessed. The room represents Sara's transformation into one of the shadow cultists and serves as the trap that lures the documentary team to their deaths.

Sara hints at room 2C before the crew splits up, and Mitchell warns them about what he found in the footage.