Meredith must distract herself as Derek prepares to move to Washington, DC. Meanwhile, Jackson and April deal with difficult news.
The BAU travels to Chicago to investigate a series of mass murders, after teenagers in a missing persons report become the main suspects.
The team investigate when a woman is killed leaving an ice hockey game.
Emmalin has college issues; Michael's career path is unclear; Claudia Joy must choose sides; Denise returns to work; Roxy supports Trevor.