A serial killer with a dangerous obsession with an erotic bestseller puts the BAU's profiling powers to the test. Plus Kate announces some news.
The squad is forced to work with a private investigator when a clothing designer is found poisoned and his wife reported missing; Jane asks Maura to teach her mother how to handle her finances.
After a vice admiral's laptop is infected with ransomware, he enlists the NCIS team to track down the hacker before the computer virus eliminates his files.
When Willis and Rox are called to the scene of a wildfire in the mountains of Los Angeles to tend to the injured firefighters, they choose to stay to look for a missing young boy who was separated from his father in the chaos.