In Uinta County Wyoming, two sets of two teens apiece commit suicide by hanging in their respective homes on consecutive Fridays. The kids showed no prior signs of suicidal tendencies. Although the BAU do not deal with suicides, JJ talks Hotch into the team taking the case as she can feel that there is something more going on than just suicides. Being a Wednesday, the BAU have two days to figure out what's going on before the next potential suicides. Initial investigations show that all the kids were model students. Upon inspection of their computers however, they were all participating in an on-line "choking" game, the choking phenomenon said to be akin to a drug-less high. The BAU try to warn both parents and teenagers in the area about the site and not to participate in the game, but know that they still need to track down the unsub who set up the site. Their investigation takes them to a family dealing with a death among their own.