Jack’s Back

In Los Angeles, John Wesford and fellow doctor Pendler arrive at the latest crime scene, where a Jack the Ripper-style killing has occurred. They know each other professionally, working for the same medical unit under the abusive Dr. Sidney Tannerson. The investigation hints at a copycat killer and establishes the tense dynamic among the main characters.

Pendler realizes John's testimony would indict him, and in an ambiguously staged scene, murders John and makes it look like a suicide. The police immediately dub John the killer and speculate that he took his own life out of guilt.

John's identical twin, Rick Wesford, suddenly appears and claims his brother did not kill himself because he has seen visions of the true killer. The revelation unsettles investigators who had anchored the case on the apparent suicide and creates doubt about the credibility of eyewitness testimony.

In flashbacks, the viewer sees Pendler murder John Wesford. These memories conflict with the police narrative and cast doubt on the official account.

The police remain skeptical of Rick's claims, but Rick teams up with Dr. Moscari to pursue new leads. Together they pursue a parallel investigation that challenges the department's approach.

Rick identifies Pendler, tracks him down, and confronts him. Pendler attacks Rick and is subsequently arrested.

Pendler is an intriguing suspect; physical evidence places him at the final murder, yet his habits do not match the killer's profile. Investigators debate whether the arrest is legitimate or if there is a larger manipulation at play.

Rick asks the police psychologist to hypnotize him to clarify the visions. During the session, he sees Pendler attack his brother again and notes that Pendler's shoes do not match the copycat's, and that Dr. Tannerson had been at the scene.

He deduces that Dr. Tannerson will next target Chris Moscari, and he speeds to her house, attracting a string of police cars with his reckless driving. The move shows Rick's relentless commitment to protecting his brother and solving the case.

Chris survives the attack thanks to Rick's warning and the police response. The near miss reinforces the stakes of the investigation.

Rick kills Dr. Sidney Tannerson, avenging John's murder. The act also reveals that Tannerson manipulated Pendler into committing the killings.

The investigation concludes that Dr. Sidney Tannerson manipulated Pendler into murdering John Wesford, orchestrating the copycat killings. Rick's visions help uncover the manipulation and bring the case to a close.