Mr. Brooks is a 2007 American psychological thriller film directed by Bruce A. Evans starring Kevin Costner, Demi Moore, Dane Cook, and William Hurt. It was released on June 1, 2007. The film follows the eponymous character, a celebrated Portland businessman and serial killer (Costner) who is forced to take on a protégé (Cook) after being blackmailed, and has to contend with his bloodthirsty alter ego (Hurt) who convinces him to indulge his "habit". His life grows even more complicated when a driven police officer (Moore) reopens the investigation into his murders. The film received mixed reviews and grossed $48.1 million against a $20 million budget.

Earl Brooks, a respected businessman in Portland, Oregon, leads a secret life as a serial killer. Despite his effort to curb his "killing addiction," Brooks succumbs to his id, Marshall, and kills a young couple in their bedroom. As part of his psychopathology, Brooks leaves each victim's bloody thumbprint on a lampshade, an act that spawned the nickname the "Thumbprint Killer". He follows a meticulous modus operandi, including fastidious preparation, cleansing the crime scene, posing the bodies, locking doors before departing, and even reciting the Serenity Prayer to help himself calm down. Brooks realizes later that the bedroom curtains were open during the murder, the open window facing an apartment building.

Portland Police Homicide Detective Tracy Atwood is on the case, having trailed the Thumbprint Killer for a number of years. During her investigation she finds out that another serial killer that she previously caught, Thornton Meeks aka The Hangman, has escaped from prison and has vowed to kill her.

Brooks's daughter, Jane, unexpectedly arrives home and asks for a job at his company, having dropped out of college. Later, Brooks learns that Jane is pregnant. Soon after, Brooks and his family are visited by Palo Alto detectives investigating a murder in Jane's former campus dorm. Brooks realizes that Jane committed the murder. He briefly considers allowing her to be caught to "save her" from becoming like him. He changes his mind and commits a similar murder in Palo Alto to provide Jane with an alibi.

A man calling himself "Mister Smith" approaches Brooks. Having a direct view of the murdered couple's bedroom, Smith took pictures of Brooks's crime as it happened. He demands to accompany Brooks during a murder. Brooks reluctantly agrees, warning Smith that killing can become addictive.

Detective Atwood interviews Smith and several other residents living across from the latest crime scene. Brooks learns that Atwood, in addition to being stalked by The Hangman, is undergoing a difficult divorce from her husband, Jesse Vialo. He decides that Vialo and his lawyer/lover, Sheila, will be Smith's first victims. At the scene of the Vialo murder, Smith wets his pants.

Leaving the scene, Smith holds Brooks at gunpoint in panic. Brooks admits to being suicidal, having found his urges irrepressible. At a cemetery, Brooks tells Smith to kill him and dispose of his body in an open grave, sparing his family the shame of his crimes. Smith pulls the trigger. However, Brooks had previously tampered with the gun on the off-chance that he changes his mind. Brooks, deciding he wants to live and see his grandchild, kills Smith and hides his body in the open grave.

With the photos already destroyed, there is no evidence tying Brooks to the crimes. As Smith's urine is the only DNA evidence tied to the Thumbprint Killer, the investigation is off Brooks's trail. Brooks also cleaned out Smith's apartment, intentionally leaving behind a moving company receipt with a new address written on it. Atwood goes to this address and finds herself face-to-face with The Hangman and his girlfriend. A shootout ensues, ending when Atwood wounds Meeks, forcing him to murder his girlfriend and then commit suicide.