Build a movie plot around this: Who is John Trent? A patient in a psychiatric hospital.
Dr. Wrenn visits John Trent, a patient in a psychiatric hospital, and Trent recounts his story:Trent, an insurance investigator, has lunch with a colleague who preps him on his next assignment: investigating a claim by New York-based Arcane Publishing. During their conversation, Trent is attacked by a man wielding an axe who, after asking him if he reads Sutter Cane, is shot dead by a police officer before he can harm Trent. The man was Cane's agent, who went insane and killed his family after reading one of Cane's books.Trent meets with Arcane Publishing director Jackson Harglow, who tasks him with investigating the disappearance of popular horror novelist Sutter Cane, and recovering the manuscript for Cane's final novel. He assigns Cane's editor, Linda Styles, to accompany him.Linda explains that Cane's stories have been known to cause disorientation, memory loss and paranoia in "less stable readers". Trent is skeptical, convinced that the disappearance is a publicity stunt. Trent notices red lines on Cane's book's covers which, when aligned properly, form the outline of New Hampshire and mark a location alluded to be Hobb's End, the fictional setting for many of Cane's works.They set out to find the town. Linda experiences bizarre phenomena during the late-night drive, and they inexplicably arrive at Hobb's End in daylight. Trent and Linda search the small town, encountering people and landmarks described as fictional in Cane's novels. Trent believes it all to be staged, but Linda disagrees. She admits to Trent that Arcane Publishing's claim was a stunt to promote Cane's book, but the time distortion and exact replica of Hobb's End were not part of the plan.Linda enters a church to confront Cane, who exposes her to his final novel, In The Mouth of Madness, which drives her insane; she begins embracing and kissing Cane passionately. A man approaches Trent in a bar and warns him to leave, then commits suicide. Outside the bar, a mob of monstrous-looking townspeople descend upon him. Trent drives away...