“Supply & Demand” — When the bodies of two missing persons are found in a car trunk, Garcia (Kirsten Vangness) helps the BAU investigate when they suspect an interstate human trafficking ring is at work. Also, Hotch warns the team of possible changes, and they are surprised when a beloved team member returns, on the sixth season finale of CRIMINAL MINDS, Wednesday, May 18 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Photo: Eric McCandless/CBS ©2011 CBS Broadcasting, Inc. All Right Reserved.