01/29/2013 02:13 pm ET

'Law And Order: SVU' Tackles Gay Rights With Nia Vardalos (EXCLUSIVE VIDEO)

"Law and Order: SVU" is bringing in Nia Vardalos for an episode tackling gay marriage laws in New York State.

In the exclusive preview clip of "Criminal Hated" below, Detectives Benson (Mariska Hargitay) and Amaro (Danny Pino) are doing an interrogation when Vardalos' Counselor Minonna Efron interrupts. It seems her client and the young man under interrogation aren't just boyfriends ... they're husbands.

"Law and Order: SVU" airs on Wednesday, Jan. 30 at 9 p.m. EST on NBC.

Check out NBC's official description of the episode below:

ADA BARBA TRIES A MURDER CASE AGAINST AN UNPREDICTABLE DEFENSE ATTORNEY (GUEST STAR NIA VARDALOS) IN A SHOWDOWN THAT STRETCHES THE BOUNDARIES OF THE LAW. The SVU detectives go undercover to arrest a man who targets and brutally attacks other men. They gather enough evidence for ADA Barba (Raul Esparza) to file charges, but the case begins to spiral as he contends with a deceptively tough defense attorney (guest star Vardalos.) Also starring Mariska Hargitay (Detective Olivia Benson), Ice-T (Detective Odafin Tutuola), Danny Pino (Detective Nick Amaro), and Kelli Giddish (Detective Amanda Rollins). Also guest starring Victoria Rowell (“The Young and The Restless”) and Fred Norris (“The Howard Stern Show”)

'Law and Order: SVU'