Larry Herron

With some urging, Mitch joins in on Cam's efforts to save an old tree in the park, but just how far will they go? Jay and Manny are each pushed beyond their comfort zones when they attend a kid's Olympics-themed birthday party, and Claire brings Gloria along on a Costco run -- but add in a "pregnancy brain" and it makes for quite an eventful trip.

The BAU searches inside a gated New Mexico community for a killer targeting women, and Hotchner looks to an FBI cadet with a unique past for help with the investigation.

While Cal is on vacation in Mexico, he investigates a bizarre case of a missing woman; meanwhile, the rest of the team deal with reports of contaminated blood.