Photo Flash: First Look - LAW & ORDER: SVU's 'Undercover Blue,' Airing 3/20

On LAW & ORDER: SPECIAL VICTIMS UNIT's upcoming episode, titled "Undercover Blue," as he prepares to testify against pimp Bart Ganzel, a woman comes forward claiming that Brian Cassidy (guest star Winters) raped her while he was an undercover detective. ADA Barba (Raul Esparza), Detective Benson (Mariska Hargitay) and the SVU squad nervously await the outcome of the trial, concerned for Cassidy as well as the ongoing prosecution of Ganzel. When prosecutor Derek Strauss (Germann) pushes hard for a win, Cassidy and his lawyer (guest star Reg E. Cathey) use some surprising methods of defense, with shocking consequences for Detective Amaro (Pino). Also starring Ice-T (Detective Odafin Tutuola), Richard Belzer (Sergeant John Munch) and Kelli Giddish (Detective Amanda Rollins). "Undercover Blue" airs March 20 at 9:00 p.m. on NBC.

Check out a first look below!

Photos by: Michael Parmelee/NBC

Dean Winters, Mariska Hargitay

Mariska Hargitay, Dean Winters

Dean Winters

Mariska Hargitayn, Raul Esparza

Mariska Hargitay, Robyn Rikoon

L Danny Pino, Richard Belzer

Reg E. Cathey, Dean Winters

Danny Pino

Mariska Hargitay, Richard Belzer, Raul Esparza