We Don't Need Another Hero

Three months after the shooting at the precinct, Jane is ready to get back to work, but has to wait for a doctor to sign off that she is ready for duty. At a award ceremony for officers that showed extraordinary efforts in the line of duty Jane begins bonding with a fellow recipient, Abby, but after the award ceremony is over, Abby's car explodes. During the autopsy Maura finds that someone in the army killed Abby because she was hit by friendly fire while in the line of duty. Meanwhile, Angela and Frank are getting divorced and someone from Jane's past returns.