The BAU are brought to Los Angeles to investigate a string of seven brutal slayings over a two week period. The killings are what Reid describe as "overkill", suggesting that the single killer has suffered a psychotic break which prompted the killings. The overkill that Reid describes is the fact that the victims all had severed body parts, the severing done by a large sharp bladed weapon. When there are more killings, the BAU get a clearer victimology. Although the BAU are closing in at least geographically on the unsub, they get a major break when they are made privy to some drawings resembling the murders and murder sites. Meanwhile, Garcia returns to work after the recovery from her gunshot wound. She is frustrated to find that her office is not the way she left it.