The BAU are still mourning Prentiss' death, but celebrate Seaver's graduation. As all on the team, including Seaver, realize that she is not a replacement for Prentiss, Hotch is on the search for another profiler as quickly as possible. Meanwhile, they travel to Portland, Oregon, where two murders have happened. The victimology is different, with the similarities between the deaths being the victim first being bludgeoned then stabbed multiple times. The nature of the stab wounds and the petty theft involved with the murders make the team believe they are dealing with a gang. But when they view the site of one of the murders, Hotch believes that they are dealing with only one unsub - a schizophrenic - which is confirmed by other evidence at other sites. With subsequent similar murders, the team learns more about the unsub, which includes religious exorcisms. This case is especially difficult on Reid, who sees some similarities of the unsub in himself.