Ethan Henry

A professor from Lewis' past tips off the BAU to an alarming number of overdose deaths of patients who just completed rehab.

Michael joins forces with an unlikely accomplice to get a fink out of the crosshairs of a deadly gangster. Meanwhile, Card recruits Fiona as a CIA asset in order to prevent her extradition into British Custody but as Fiona quickly realizes, his offer comes with a price.

When a cartel puts a hit on Mike Warren, he returns to Graceland for a special undercover mission. He quickly discovers, however, that Briggs and the house have changed since he last saw them. His work in D.C. and his old life in L.A. clash in ways he never expected, especially when the mission takes a surprising, dangerous turn.

When Pandora uses her powers to unleash a new form of evil, Abbie and Crane are forced to face their pasts in unexpected ways.