The BAU is stumped to find the common denominator among male victims in Montana, making it difficult to profile the UnSub. Also, JJ must confront her feelings about her sister's tragic death. Candy Clark guest stars.
The team treats a boy who wakes up from nightmares of being choked still unable to breathe; Park has intimate dreams about co-workers; Dominika discovers a secret that has the potential to ruin her relationship with House.
After a student is gunned down in broad daylight, the investigation reveals she had more than a few secrets. Meanwhile, Jane's mother, Angela, and father get into a spat over the car.
Vic gets a surprise visit from her father; an FBI agent helps Walt pin down the mole working with Malachi; a tough race enables Vic to move forward.
A veteran missing the adrenaline rush she experienced during war decides to become a modern-day Robin Hood; Becca thinks Billy is having an affair.