This document lists the top 10 best plot twists in thriller movies. Some of the twists include the murderer in Identity being one of the personalities of the man with dissociative identity disorder, the killer in Psycho being Norman Bates who murdered his mother years prior, and the main character in Fight Club having dissociative identity disorder and actually being both himself and Tyler Durden. Other twists involve characters having secret twins or relatives, characters being dead or having misidentified mental illnesses, and killers masterminding reveals of their sinister plans.

1. Top 10 Best
PLOT TWISTS IN THRILLER MOVIES

2. 10.Identity (2003)
 Plot: The guests of an interstate motel in the
Nevada desert quickly learn there’s a homicidal
killer among them, as they’re getting knocked off
one by one.
 Twist: The murderer is the little boy—which is
explained as we learn each of the 10 strangers
stranded at the roadside joint are manifestations of
a man who suffers from an extreme case of
dissociative identity disorder. The boy is one of
those personalities

3. 9.Psycho (1960)
 Plot: Marion Crane is murdered at a desolate
motel by the mentally-ill mother of its shifty
owner, Norman Bates
 Twist: Bates murdered his mother years before,
then developed a split personality that made him
believe he is his mother. He murdered Marion
disguised as his mother.

4. 8.The Usual Suspects (1995)
 Plot: Five criminals plot against the police after being
called in for a crime they didn't commit, but begin to
uncover a larger plot stemming from legendary
criminal Keyser Söze. The job for Söze goes wrong, and
only Roger "Verbal" Kint survives. He attempts to
explain to the police what happened so they'll let him
leave.
 Twist: After the police let Kint go, they realize he's
actually Söze.

5. 7.Primal Fear (1996)
 Plot: Defense attorney Martin Vail's latest
client, altar boy Aaron Stampler, has
been charged with the murder of the
archbishop. Stampler suffers from
multiple personality disorder, blaming
the murder on his alter ego, "Roy’’.
 Twist: Stampler doesn't actually have the
disorder—his true personality is that of
the sociopathic Roy.

6. 6.The Prestige (2006)
 Plot: Rival magicians Robert Angier and Alfred Borden
attempt to outdo one another in a quest for the perfect
illusion in 19th-century London.
 Twist: Borden is actually two people—twins, to be exact,
which is how they pulled off so many of their tricks.
Meanwhile, Angier copied his tricks by cloning himself with
the help of Nikola Tesla—killing his clones after each trick.

7. 5.Chinatown (1974)
 Plot: The wife of a prominent bureaucrat hires a
private investigator to follow her husband, whom
she suspects of infidelity. Along the way, the PI
uncovers murder plots, corruption and a young girl,
Evelyn's sister, who is somehow involved.
 Twist: Evelyn reveals her sister is also her
daughter—Evelyn was in an incestuous relationship
with her father.

8. 4.The Six Sence (1999)
 Plot: After a home invasion, Dr. Malcolm Crowe, a child
psychologist, returns to work by attempting to help a
young boy who sees the dead.
 Twist: Dr. Crowe is actually dead and ghost too.

9. 3.Fight Club (1999)
 Plot: An unnamed narrator and his new friend,
Tyler Durden, begin a "fight club" that turns
into a national movement.
 Twist: The narrator is suffering from
dissociative identity disorder—he and Tyler
Durden are the same person.

10. 2.Memento (2000)
 Plot: Leonard Shelby suffers from anterograde
amnesia following a home invasion that left his
wife dead. Now, he searches for his wife's
murderer with clues he leaves himself with
tattoos, notes and photographs.
 Twist: Leonard's wife survived the home invasion,
but he accidentally killed her later.

11. 1.Seven (1995)
 Plot: Two detectives, Somerset and Mills, search for a serial
killer obsessed with the seven deadly sins.
 Twist: The murderer, John Doe, offers to lead the detectives
to the final two bodies that complete the seven cardinal sins.
When they arrive at a location in the middle of the desert,
Somerset receives a box from a deliveryman—inside is the
head of Mills' wife. Doe admits he murdered her out of
envy—the sixth sin—and challenges Mills to murder him,
making wrath the seventh and final sin.