The detectives go under cover to arrest a man who brutally attacks other men; a deceptively tough defense attorney complicates ADA Barba's case.

After a single mom is arrested for leaving her young daughter alone for days, Sgt. Benson suspects the woman may have been abused in her own childhood.

Taking an active approach to catching sex offenders, the team targets a photographer with a secret life whose fantasies may have crossed into reality.

The cops get tangled in an elaborate online hoax that leads to the rape of a popular social media star; Benson sets firm ground rules with Sheila.