Movies like The Ninth Configuration

After returning home from the Vietnam War, veteran Jacob Singer struggles to maintain his sanity. Plagued by hallucinations and flashbacks, Singer rapidly falls apart as the world and people around him morph and twist into disturbing images. His girlfriend, Jezzie, and ex-wife, Sarah, try to help, but to little avail. Even Singer's chiropractor friend, Louis, fails to reach him as he descends into madness.

Zach Riley is a psychiatrist, who leaves a job at a prestigious university, to take up a job at the privately run mental institution, Millwood. What he doesn't reveal at the time of his appointment is that this was the very place where his novelist father, T.L. Pierson, spent many years of his life.

World War II soldier-turned-U.S. Marshal Teddy Daniels investigates the disappearance of a patient from a hospital for the criminally insane, but his efforts are compromised by troubling visions and a mysterious doctor.

A crooked cop, a mob boss and the young girl they abuse are the denizens of a city's criminal underworld. It's a world that ordinary Arthur Poppington doesn't understand and doesn't belong in, but is committed to fighting when he changes into a vigilante super-hero of his own making, Defendor. With no power other than courage Defendor takes to the streets to protect the city's innocents.

Beautiful young manicurist Carole suffers from androphobia (the pathological fear of interaction with men). When her sister and roommate, Helen, leaves their London flat to go on an Italian holiday with her married boyfriend, Carole withdraws into her apartment. She begins to experience frightful hallucinations, her fear gradually mutating into madness.

A divorced horror novelist coming to terms with the disappearance of his young son inherits an old mansion home to malevolent supernatural residents.

A dangerously disturbed Vietnam veteran struggles with life 15 years after his return home, and slowly falls into insanity from his gritty urban lifestyle.

Animal control officer Walter Sparrow becomes obsessed with a novel that he believes was written about him, as more and more similarities between himself and his literary alter ego seem to arise.

In Oklahoma, Agnes, a lonely waitress living in an isolated and dilapidated roadside motel, meets Peter, a quiet and mysterious man with whom she establishes a peculiar relationship.

Mike Fallon, the Accident Man, is a stone cold killer. When a loved one is murdered by his own crew, Fallon is forced to avenge the one person who actually meant something to him.

A traumatized veteran, unafraid of violence, tracks down missing girls for a living. When a job spins out of control, Joe's nightmares overtake him as a conspiracy is uncovered—leading to what may be his death trip or his awakening.

In a world of fake castles and anthropomorphic rodents, an epic battle begins when an unemployed father's sanity is challenged by a chance encounter with two underage girls on holiday.