The BAU investigates a series of murders in Modesto that appear to be connected to a killer who jumps trains in Northern California and chooses his victims based on their proximity to the railway.
Natalie becomes convinced a critic (Guest Star Dylan Baker) who panned her daughter Julie's theatrical performance was responsible for a murder at the same time as the show.
Robert enlists the help of a musical icon to fend off Kitty's bout with cold feet; Nora reconnects with a man from her past; Sarah has mixed emotions about agreeing to have dinner with a new business consultant; Tommy is overwhelmed by guilt when Sarah and Lizzie return home; Justin pursues a new romance with someone with questionable intentions.
Darlene learns some shocking news about an old friend; the Conners come together to help someone who is close to them.
Becky is working double shifts and taking classes at the community college, resulting in less time with her daughter; Dan decides to foster an elderly dog.
