Netflix’s ‘Delusion’ Release Date, Cast, and Plot Details Ahead of Its Global Premiere

Netflix is preparing to launch a new Thai mystery series that blends family drama with rural folklore, and interest has been building steadily since the first images and casting news emerged. The show is called ‘Delusion,’ and it follows a schoolteacher whose father becomes the center of a town’s suspicion after a child goes missing. Netflix released the first images of Delusion, describing it as an intense mystery series that unravels the relationships within a family through a complex investigation.

For viewers wondering exactly when to tune in, who stars in the series, and what the story actually involves, the details are now largely confirmed. Here is a full breakdown of the release date, cast, plot, and trailer for ‘Delusion.’

Netflix’s ‘Delusion’ Release Date and Time

Netflix has confirmed that Delusion will be released globally on September 24, 2026. The series arrives as part of a broader push into Thai originals, with the streamer treating the show as one of its higher profile releases from the region this year.

Delusion is part of Netflix’s Thailand content slate for 2026, which includes three series, four films, and the platform’s first locally produced feature length documentary. According to Netflix, more than 90 percent of subscribers in Thailand watched local content the previous year, and 33 Thai titles have charted in the platform’s global Top 10 to date, including 17 Netflix Originals.

That context helps explain why ‘Delusion’ has received a fairly substantial marketing push, including a dedicated trailer and poster reveal rather than a quiet drop. The show is positioned as a flagship entry in that slate rather than a minor addition.

As with most Netflix Originals, the series is expected to premiere at the platform’s standard global rollout time, though the streamer’s own announcement centers on the date itself rather than a specific hour.

Cast of Netflix’s ‘Delusion’

The series centers on Taew Natapohn Phornprapha in the lead role. The full cast includes Natapohn Phornprapha, Jespipat Tilapornputt, Surasak Chaiyaat, Tom Sirani Yankittikan, August Vachiravit Paisarnkulwong, Norraphat Nakadumrongchai, Boombim Samtone, and Suttawat Settakorn.

Natapohn Phornprapha plays Wan, and the actress previously starred in Netflix’s Thai comedy film Frozen Hot Boys. She is also known for dramas including Nobody’s Happy if I’m Not, Game of Outlaws, and Game Sanaeha.

Her co-star Surasak Chaiyaat plays Narong, the father whose declining health becomes entangled with the town’s suspicions. The trailer credits him as Nu Surasak Chaiyaat, describing his character as an elderly man whose worsening dementia makes him impossible to defend and impossible to trust, even by his own family.

Behind the camera, the series is directed by Chayan Laoyodtrakool, produced by Prakasit Patrathiranond, and written by Chayan Laoyodtrakool alongside Kasidej Sundararjun and Kanokphan Ornrattanasakul. Base Camp PA serves as the content partner on the project.

Plot of Netflix’s ‘Delusion’

The story is set far from Bangkok, in a quiet rural district. Delusion plunges viewers into a mystery set in the district of Chiang Khan in Loei Province, where a child’s disappearance reawakens something the town has spent over a decade trying to forget and bury.

That old wound is tied to local legend. As fear takes hold, the folklore of Phii Pong resurfaces, and as the town searches for someone to blame, suspicion settles on Narong. The child’s disappearance awakens an old local fear surrounding this legend, and at the center of it all is an elderly man whose worsening dementia makes him an easy target for accusations of murder.

His daughter refuses to let the town’s narrative stand unchallenged. Wan, a provincial high school teacher, is forced to stand up and fight against the town’s rumors and prove that her father is only a sick man who needs care, not the monster the community has decided he is. But every answer she uncovers only raises more questions, and the closer she gets to the truth, the less she recognizes the people closest to her, the ones she calls family.

Her already complicated life gets thrown into chaos as the investigation forces her to question not just her father’s innocence, but the people around her. The series appears designed to sit at the intersection of psychological drama and small town horror rather than a straightforward whodunit.

Trailer for Netflix’s ‘Delusion’

Netflix unveiled the main poster and trailer for Delusion, inviting audiences to prepare to question everything they see, and everything they don’t, ahead of the September 24 premiere. The footage leans heavily on atmosphere over action, favoring dread and suspicion instead of overt violence.

The trailer teases meticulous production design and a rural atmosphere thick with suspicion, daring audiences worldwide to uncover the truth. That framing lines up with the show’s central question about whether Narong’s illness is being mistaken for guilt, or whether something darker is genuinely at play.

Director Chayan Laoyodtrakool described the intent behind the project in a statement shared through Netflix. According to Netflix, the core of the story is family dynamics, heavily layered with mystery, crime, and investigation, amplifying the emotional weight of the series far beyond what viewers might expect, with the aim of leaving audiences with a deeper understanding of human nature by the end.

For the cast, the material clearly hit close to home. Natapohn Phornprapha shared that her character deeply resonates with her own life, particularly the struggles of a generation trying to build their own future while carrying the anxiety of caring for aging parents.

With the premiere date now set and the marketing rollout in full swing, ‘Delusion’ looks poised to be one of the more talked about Thai originals Netflix has released this year, and it will be worth watching how audiences respond once Wan’s search for the truth about her father finally plays out on screen. What do you make of Narong’s fate once the Phii Pong legend collides with his family’s own secrets?