When someone is killing Columbian drug dealers who have come to the city. Kevin and Frank find themselves working with Jefferson who is working with a Columbian cop who's in town to get a Columbian drug lord.
Two owners of a health club arguing about someone on drugs and one ends up being killed as he's leaving the fitness club. Christine is dating the owner that wasn't kill but know one knows about the relationship.
O'Brien fails to save a young girl from committing suicide. Her death deeply disturbs him and he blames himself for not stopping it. He investigates the girl's shady friends and family to find the motive.