Stephanie Czajkowski

Twenty-something Kelly Landis, who has been missing for three days, is found dead in a back alley in Georgetown. Although the D.C. police don't connect her death to any other murders, they call in the BAU because of what was done to her: her lips were cut off.

The investigation into a golfer-turned-lumberjack's murder reveals a plethora of secrets, all of which could have led to the victim's untimely death, including an affair.

After the U.S. Treasury Department is hacked, Nell and Eric go undercover inside a couple's retreat to track a tech-savvy husband and wife linked to the crime. Also, Digital Forensics Specialist Dave Flynn (Scott Grimes) arrives from the NCIS cyber office in San Diego to run ops while Eric and Nell are on assignment. Bar Paly guest stars.

Kara struggles to juggle her two lives when National City comes under threat while she is babysitting Cat's son.

With Maura at a convention, Susie helps Jane solve a baffling murder case that features a husband jealous of his wife's dramatic weight loss.

Cooper's drug problem becomes worse; Ben nears the end of his training period.