Criminal Minds: "Hopeless" - A group of suspects with a pack mentality who kill for the thrill of it are the subjects of a BAU manhunt, on a rebroadcast of CRIMINAL MINDS, Wednesday, July 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Salli Richardson-Whitfield ("Eureka") guest stars as the sister of a murder victim who bonds with Morgan. (Originally broadcast 10/14/09)