The BAU team tracks a serial killer when mummified remains are found inside the walls of an elderly couple's South Carolina home.
Wedding bells are ringing as Rossi prepares to marry Krystall. But first, the team must investigate a series of fatal shootings in Los Angeles.
The BAU travels to Chicago to investigate an unsub who leaves red roses on his victims. Also, Rossi gets a visit from his ex-wife.
Magnum tries to catch a killer, who may be praying on wealthy men, by posing as a doctor on the same dating app that a murder victim was using.