Delusion Netflix Cast, Characters, Phii Pong Ghost and Murder Mystery Explained

Delusion is a Thai Netflix mystery thriller arriving globally on September 24, 2026. The series follows Wan, a small-town teacher whose father Narong becomes a central suspect after a child disappears and a murder investigation intensifies. Because Narong is living with worsening dementia, the case becomes tangled with unreliable memory, family secrets and local fear surrounding the legend of Phii Pong.

For viewers searching for the Delusion Netflix cast, the confirmed ensemble includes Natapohn Phornprapha, Jespipat Tilapornputt, Surasak Chaiyaat, Tom Sirani Yankittikan, August Vachiravit Paisarnkulwong, Norraphat Nakadumrongchai, Boombim Samtone and Suttawat Settakorn. Netflix has positioned the show as a psychological mystery rather than a straightforward ghost story, so the tension comes from not knowing whether the danger is supernatural, criminal or connected to what people choose to believe.

Who is in the Delusion Netflix cast?

Natapohn Phornprapha leads the story as Wan, the daughter caught between protecting her father and finding out what really happened. Surasak Chaiyaat plays Narong, whose worsening dementia makes him an easy target for suspicion because he cannot always account for his own memories or actions. Jespipat Tilapornputt is also part of the central investigation, while August Vachiravit Paisarnkulwong joins the ensemble as Wat. Several supporting roles have not been fully described in Netflix’s English-language publicity yet, so it is better to leave those character identities open until the series is released rather than guess.

What is Delusion about?

The story is set in Chiang Khan, Loei Province, in northeastern Thailand. A child’s disappearance reopens fear that the community has tried to bury for years. As rumors spread, Narong becomes the person many villagers focus on. His condition makes the situation more complicated because memory loss and confusion can make even ordinary events look suspicious.

Wan refuses to accept the town’s conclusions without evidence. Her search for answers becomes both an investigation and a family story. The closer she gets to the truth, the more she has to question people she has known for years, including members of her own household. That approach gives Delusion a useful hook for mystery fans: every clue can be interpreted in more than one way.

What is Phii Pong in Delusion?

Netflix describes Phii Pong as part of the local folklore that resurfaces after the disappearance. Within the series, the legend functions as a source of fear and suspicion. Villagers begin to connect Narong to something supernatural at the same time that his dementia is affecting his behavior and memory. The key point is that Delusion does not ask viewers to accept the supernatural explanation immediately. It uses the legend to create uncertainty between belief, illness, rumor and hidden human motives.

That distinction is important because the show is being marketed as a psychological and crime mystery. The question is not simply ‘Is there a ghost?’ but also ‘Who benefits when a frightened community chooses a supernatural explanation before the facts are clear?’

Is Delusion supernatural or psychological?

Before release, the safest answer is that it appears to be both supernatural in atmosphere and psychological in structure. Netflix’s trailer material deliberately places dementia, possible hallucination, family secrecy and the Phii Pong legend side by side. The series is designed to make viewers question what they are seeing rather than confirm one explanation in advance.

Where is Delusion set?

The mystery is set in Chiang Khan in Loei Province. Netflix has emphasized the rural northeastern Thai setting in its promotion because the location is closely tied to the mood of the story and the folklore surrounding the case. That setting also separates Delusion from many urban crime thrillers.

When does Delusion release on Netflix?

Delusion premieres globally on Netflix on September 24, 2026. Because the series has not yet premiered as of this guide’s publication, any claimed ending, killer reveal or final explanation should be treated cautiously until the episodes are actually available.

Why Delusion could appeal to mystery viewers

The most interesting part of the premise is the overlap between a criminal investigation and a family trying to understand a loved one’s changing mind. That creates tension without needing to rely only on a single monster or killer. If you enjoy Netflix mysteries where the central question keeps changing as more information is revealed, you can also browse our The Perfect Lie Netflix cast guide and Blood Sacrifice cast and mystery guide.

How dementia shapes the central mystery

Delusion uses Narong’s dementia as more than a plot device. His memory gaps make it harder for him to defend himself when the community wants a clear answer. A person who cannot reliably reconstruct every hour of a day may sound evasive even when he is trying to be truthful. That creates a dangerous gap between what investigators can prove and what frightened neighbors think they already know.

The series also places Wan in a difficult position. She is his daughter, so her instinct is to protect him, but she also has to consider the possibility that there are things about her family she does not know. That conflict should keep the mystery from becoming a simple ‘daughter proves father innocent’ story. Wan’s search is valuable because she has emotional access to Narong, but that same closeness can make her judgment vulnerable.

What the trailer does and does not reveal

Netflix’s trailer confirms the missing-child case, the suspicion around Narong, the Phii Pong rumors and the idea that Wan begins questioning the people closest to her. It does not provide a reliable answer about possession, the identity of a killer or the final explanation for the disappearance. Those unanswered points are central to the marketing, so spoiler-heavy claims published before September 24 should be treated as unverified.

Delusion cast names to know before watching

Natapohn Phornprapha may be familiar to Thai-drama viewers by the nickname Taew, while Jespipat Tilapornputt is also widely known as Jes. August Vachiravit Paisarnkulwong is another recognizable member of the ensemble. Netflix’s official materials list the full principal cast even when they do not yet attach an English character biography to every actor. After release, this guide can be updated with confirmed relationships, episode appearances and any character identities that the pre-release campaign intentionally hid.

What to update after Delusion premieres

The first post-release update should focus on confirmed character relationships, the number of episodes, the real meaning of the Phii Pong clues inside the story and whether the mystery ultimately stays grounded in crime or moves into explicitly supernatural territory. An ending section should only be added after the full season is available, with a clear spoiler warning so readers looking only for the cast are not given the solution by accident.