Singer and guitar player is brutally and mysteriously stabbed in a bar. As details emerge in the case, the squad soon realizes that the victim had something to hide. Meanwhile, Jane's dad returns after being gone for more than a year. And he's got some shocking news.

Homeland Security steps in when a senator's daughter is found murdered. The squad rushes to solve the case, which could put national security at risk. Meanwhile, Tommy and Frankie get into a fight after Tommy starts slipping back into bad old habits. And Jane reveals some shocking news that could change her life forever.