The Behavioral Analysis Unit profiles a serial killer who abducts two teenagers and murders one, and who will kill the other teen if they don't stop him in time.
When Reid fears his mother has been abducted, he asks the BAU to investigate while he's stuck in prison.
The BAU investigates when several federal government employees, including a close friend of Walker's, succumb to symptoms of a heart attack; Reid anxiously awaits his trial date.
Morgan brings the BAU new information in the case against Mr. Scratch, a serial killer and escaped convict who has been wreaking havoc on the team.
Magnum tries to catch a killer, who may be praying on wealthy men, by posing as a doctor on the same dating app that a murder victim was using.