A century-old mansion in West Adams is about to become a 1920s New Orleans brothel crawling with mobsters and vampire courtesans, and the people walking its halls won't just be watching the story unfold — they'll be part of it. Delusion: Den of the Mosquito opens this fall at the Beckett Mansion at 2218 S. Harvard Boulevard, casting guests as secret agents sent to investigate a supernatural threat hiding inside a Mafia-run bordello.
The interactive narrative theater experience runs from September 17 through November 8, according to NBC Los Angeles, with each performance lasting just under an hour. Guests aged 18 and older move through the mansion as active participants rather than passive spectators, with their encounters helping propel the night's plot forward as it unfolds into what the outlet describes as a supernatural tale involving crime, family, mobsters and monsters.
In the show's lore, guests become field agents of Anomaly, described as a clandestine organization investigating supernatural threats, according to the same report. Narrative details for the production, reported by Haunted Attraction Network, trace that fictional agency back to President Woodrow Wilson, who forms it to investigate paranormal threats before dispatching audience members into the bayou brothel. At the center of the mystery are vampire courtesans, per NBC Los Angeles's account of the production.
A Homecoming at a Landmark Mansion
Delusion creator Jon Braver said returning to the Beckett Mansion feels like coming home, according to NBC Los Angeles. He added that longtime fans will recognize the intimate, character-driven storytelling that shaped Delusion from the start — a description that lines up with the franchise's origins at this very address.
Delusion began in 2011, and the Beckett Mansion is where the show first broke out, launching with an 11-night run before actor Neil Patrick Harris joined as co-producer for its sold-out 2012 sequel, Delusion: The Blood Rite, at the same site, according to Haunted Attraction Network. Returning to the mansion for 2026 marks a milestone tied to that 15-year history.
The Beckett Residence itself carries its own pedigree. Designated Los Angeles Historic-Cultural Monument #117 in June 1973, the Neoclassical and Colonial Revival estate was designed by John C. Austin — the architect behind Los Angeles City Hall, Griffith Observatory, and the Shrine Auditorium — and was built in the early 1900s for USC trustee Dr. Wesley W. Beckett, per Wikipedia. The West Adams mansion has also served as a standing film set for dark and haunted aesthetics, appearing in productions including 20th Century Women, Criminal Minds, and music videos for David Bowie, Lady Gaga, and The Chainsmokers, according to an Estate Sales listing describing the property's history.
From Stunt Work to a Franchise Backed by a Halloween Giant
Braver built Delusion's signature blend of live stunt work and aerial effects by drawing on his background as a Hollywood stuntman and action coordinator, having performed and coordinated action scenes in films including The Dark Knight Rises, Iron Man, Transformers: Dark of the Moon, and Indiana Jones and the Kingdom of the Crystal Skull, according to a report from ScareLA. That action-heavy theatricality has remained a hallmark of the franchise as it expanded well beyond its original run.
In April 2021, Braver partnered with Denver-based Thirteenth Floor Entertainment Group — described by NoPro as the world's largest Halloween-themed entertainment company — joining the firm as Director of Immersive Entertainment to scale operations while retaining creative leadership over the franchise. Over its history across roughly 10 distinct productions, Delusion has repurposed several historic Southern California landmarks, including Pomona's 1875 Phillips Mansion for 2021's Reaper's Remorse and 2023's Nocturnes & Nightmares, as well as Downtown Los Angeles's Variety Arts Theater for 2025's Harrowing of Hell, according to a Time Out report on the franchise's venue history.
Bigger, More Interactive — and Still Intimate
The 2026 staging expands the production's format to a full 50-minute experience with branching pathways and split, choice-driven story arcs, advertised by producers as the most interactive and capacity-limited show in the franchise's history, per the Delusion official site. That scale-up sits alongside a persistent creative constraint: keeping the show's low-capacity, highly intimate format intact even as the production grows, a tension Haunted Attraction Network's coverage ties directly to the decision to restrict ticket availability rather than expand crowd sizes.
Braver said shared live experiences feel more necessary than ever in a world increasingly shaped by screens, according to NBC Los Angeles. Tickets for Delusion: Den of the Mosquito start at $143 and are available for purchase now, though pricing data from Zentix shows a broader range from $130 up to $185 depending on date and VIP options, with early access sales having opened August 7 following subscriber registration that ran from July 16 to August 6.
Delusion's autumn run lands in a crowded Southern California Halloween market. The production shares the fall calendar with major walk-through attractions like the Los Angeles Haunted Hayride in Griffith Park, running September 18 through November 1, and Queen Mary's Dark Harbor in Long Beach, according to a comparison published by Daily Ovation. Unlike those traditional mazes, Delusion asks its audience to actively shape a branching, character-driven plot rather than simply walk through scares staged around them.
