The BAU heads south to investigate a fast-moving UnSub whose signature matches that of a serial killer from 30 years ago. Also, the team learns that someone is tracking their cases and replicating crimes the BAU is solving.
Susan learns Mike had been keeping a secret; Bree becomes the prime suspect in Gaby's stepfather's murder; Gaby discovers a way to earn a higher commission at work; Tom's girlfriend works to make sure his divorce goes through.
In the series finale, Bonnie gets a new outlook on her sobriety after dealing with difficult news. Meanwhile, Jill and Andy take a big step in their relationship. MELANIE LYNSKEY and RONDI REED guest star.
Daphne has a hard time adjusting at Buckner, while Bay and Emmett bond while looking for information.
Jessica's (Angela Lansbury) first publisher (Arthur Hill), imprisoned for murder, is paroled and requires her help when he is suspected of a similar crime. Guest stars: Michael McKean, Brynn Thayer.
