While on a book tour in Cleveland, Rossi learns from Zoe Hawkes, a keen criminology student, that there has been a spike in homicides in the city, she thinks that it is the work of one serial killer. Rossi thinks nothing of it since, on the surface, the homicides have nothing in common - that is until Zoe herself is killed while searching for clues. The BAU quickly realizes the connection: the M.O. of each case is a replica of more famous serial killer, with the perpetrator being a student of serial killers. Beyond the BAU needing to find the unsub before he kills again, Rossi has to reconcile his own feelings that he was somewhat responsible for Zoe's murder.