No assignment is tougher than investigating fellow officers. Daniel's former Guns and Gangs unit, SMASH, is suspected of corruption. Under Daniel's guidance, Jesse poses as a recruit for the squad. After a brutal initiation, Jesse is accepted by SMASH leader Russell Hagler, Daniel's old mentor. As the C.I.U. closes in on the truth about SMASH, Jesse is in serious jeopardy, and in an attempt to save his colleague, Daniel makes a shocking confession.