The BAU searches for a serial killer who leaves distinctive marks on victims' faces with the help of an impressive potential new team member, forensic psychologist Dr. Tara Lewis.
Bob, Douglas and Christina try to get Dottie to make a will. Also, Abishola and Kemi's friendship is tested after Abishola catches Kemi in a lie.
Judd calls out Owen's preferential treatment of T.K.. Marjan feels ostracized at her new mosque after another rescue video goes viral.
Mark and Emily go head to head in court for the first time; things get awkward when Mark must cross-examine Lola's mother, who is called in as a character witness for a homeless youth charged with felony vandalism.
A terminal cancer patient is determined to live the last few months of his life without inhibition. Dr. Reznik's mother goes to Dr. Glassman for medical advice.