Patricia Arquette could be the key to stopping a murderer on this week's "Law & Order: SVU."

In HuffPost TV's exclusive sneak peek below, Arquette's character, Jeannie, a prostitute, is questioned by Detectives Benson (Mariska Hargitay) and Amaro (Danny Pino) after one of her regular Johns snaps. It seems Jeannie and Benson have a history together.

Here's how NBC describes the episode:

When a man goes on a killing rampage through New York, the lead FBI agent (guest star Jason Gedrick) calls upon the SVU to get information from the suspect’s last known contact – a prostitute (guest star Patricia Arquette) who had been involved in one of Benson’s (Hargitay) old cases. As the detectives work with her to track down the killer, they find themselves drawn into her world and must fight to save her life. Also starring Ice-T (Detective Odafin Tutuola), Dann Florek (Captain Donald Cragen), Danny Pino (Detective Nick Amaro) and Kelli Giddish (Detective Amanda Rollins.) Also guest starring Anne Mera, Gbenga Akinnagbe and P.J. Brown.

"Law & Order: SVU" airs Wednesdays at 9 p.m. EST on NBC.

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  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

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  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

  • "Law & Order: SVU" Season 15

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  • "Vanity's Bonfire"

    Jessica Hecht as Gillian Webster

  • "Vanity's Bonfire"

    Ice-T as Det. Odafin "Fin" Tutuola, Kelli Giddish as Detective Amanda Rollins

  • "Vanity's Bonfire"

    Scott Bakula as Kent Webster

  • "Vanity's Bonfire"

    Scott Bakula as Kent Webster

  • "Vanity's Bonfire"

    Scott Bakula as Kent Webster

  • 300th Episode Celebration

    "SVU's" 300th episode cake.

  • 300th Episode Celebration

    Dick Wolf and the cast of "SVU."

  • 300th Episode Celebration

    Co-Executive Producer Michael Smith, Executive Producer Julie Martin, Co-Executive Producer Ed Zuckerman, Ice-T as Detective Odafin 'Fin' Tutuola, Danny Pino as Detective Nick Amaro, Kelli Giddish as Detective Amanda Rollins, Dann Florek as Captain Donald Cragen, Executive Producer Dick Wolf, Richard Belzer as Detective John Munch, Mariska Hargitay as Detective Olivia Benson, Executive Producer Peter Jankowski, Co-Executive Producer Arthur Forney, Executive Producer Warren Leight.

  • 300th Episode Celebration

    Ice-T as Detective Odafin 'Fin' Tutuola, Danny Pino as Detective Nick Amaro, Kelli Giddish as Detective Amanda Rollins, Dann Florek as Captain Donald Cragen, Executive Producer Dick Wolf, Richard Belzer as Detective John Munch, Mariska Hargitay as Detective Olivia Benson, Executive Producer Warren Leight.

  • 300th Episode Celebration

    Mike Canosa from transportation, Production Accountant Greg Cattano, Executive Producer Peter Jankowski, Eddie Coonan of transportation, Dann Florek as Captain Donald Cregan, Executive Producer Dick Wolf, Richard Belzer as Detective John Munch, Mariska Hargitay as Detective Olivia Benson, Co-Executive Producer Arthur Forney, Director Jean DeSegonzac, John Raffone of transportation, Publicist Pam Golum -- "Law & Order: Special Victims Unit" celebrates 300 episodes with the current cast and crew who worked on episode 1.

  • 300th Episode Celebration

    The cast of "Law & Order: SVU."

  • 300th Episode Celebration

    The cast and crew of "Law & Order: Special Victims Unit" surround Executive Producer Dick Wolf to celebrate the 300th episode of the show.

  • 300th Episode Celebration

    Dick Wolf.

  • 300th Episode Celebration

    Richard Belzer, Dick Wolf & Mariska Hargitay.

  • 300th Episode Celebration

    Mariska Hargitay as Detective Olivia Benson, Co-Executive Producer Arthur Forney, Co-Producer/Casting Director Jonathan Strauss, Executive Producer Warren Leight.

  • 300th Episode Celebration

    Dick Wolf and the cast celebrate "SVU's" 300th episode.

  • Law and Order: SVU Season 14

    Mariska Hargitay as Detective Olivia Benson.

  • Law and Order: SVU Season 14

    Jason Cerbone as CEA Counselor Terrence Quinn, Dann Florek as Captain Donald Cragen.

  • Law and Order: SVU Season 14

    Dean Winters as Detective Brian Cassidy, Danny Pino as Detective Nick Amaro.

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