Detective Casey O'Connor is back, this time with new partner Leslie Tucker. They join forces with Tori Hunter (from Hill's acclaimed Hunter's Way and In the Name of the Father) to track down a killer targeting single women who live alone. But as Casey and Leslie grow closer, Leslie begins to question her sexuality. She craves more time with her partner and less is spent with the man she is supposed to marry, exposing their differences. Casey turns to Tori and Sam for advice when it appears her relationship with her new partner might follow the same path as theirs. Partners takes us from the squad room to the streets, and into the private lives of four of Dallas' finest female detectives.