Suicide Squad Vol. 2: Basilisk Rising (The New 52)

As the surviving Squad members attempt to recover from their disastrous
Gotham City mission, we learn a dark secret that has been festering in the team
since issue #1: a traitor stalks the Suicide Squad! The saboteur's mission:
Assassinate Amanda Waller, expose the Squad, and leave Task Force X in ruins!
The Basilisk strikes!