S4, E11: Morales looks to pit the Chinese against Redding. Alvarez offers Glynn his services as an informant as a way out of solitary. Dr. Nathan announces that Em City inmates will be selected to test a trial drug supposed to age people the same number of years as their sentences, which in turn would reduce the time actually spent behind bars. Tidd 'proves' his intentions towards Said and Arif are honorable. Barlog, Keller and Beecher become embroiled in a love triangle that intensifies when the FBI offers leniency to Barlog in exchange for testifying against Keller.