Arizona tries to reconcile with Callie, who has big news to share; Teddy faces an important decision; the residents receive new interns; the Chief makes an announcement.
A female soldier accuses a commanding officer of sexual assault; the team investigates a potential athletic bribe.
Vince receives contradictory direction; Ari and Dana Gordon try to put out the flames; Turtle has a clandestine meeting.
The BAU is called upon when bioterrorism is suspected in a series of mysterious deaths; Garcia visits her stepbrother to take care of a difficult family issue.
Addison cannot stop thinking of Pete; Violet's ex visits the clinic and Cooper is not happy to see him; Naomi and Sam's daughter secretly seeks Addison's medical advice.