Gibbs and the team head back to school when a Marine in an ROTC program is found murdered on a college campus.
Voight (Jason Beghe) and team head to a house that's been associated with a number of top gangs. Events at the search result in Ruzek (Patrick Flueger), being encouraged to seek some counseling which may have lasting repercussions professionally and personally. Meanwhile Halstead's (Jesse Lee Soffer) temper rises when he comes in contact with some unwelcomed people from his past.
Peggy is thrilled when Kay (Kathy Bates) comes back to town; Molly looks for a way to lift Kay's spirits; Carl and Mike work crowd control at a public breast feeding rally.
Following a career-week presentation at Grandview High, Melinda sees the spirit of a cheerleader attack her former squad-mates.
On the very night that he wins a D.J. competition, DJ Banner is found dead in an alleyway outside the club where the contest is being run. (TV-14)
