• Kelli Giddish made her first appearance on 'SVU' in 2007 as a rape victim, but she returned to the show in 2011 for the 13th season as Detective Amanda Rollins. In that season, it's revealed that.
• Kelli Giddish made her first appearance on 'SVU' in 2007 as a rape victim, but she returned to the show in 2011 for the 13th season as Detective Amanda Rollins. In that season, it's revealed that Rollins has a gambling addiction, which she deals with over the course of the series.
• We first meet Amanda Rollins after she transfers from the Atlanta PD to Manhattan's Special Victims Unit in 2011. We learn that she grew up in Loganville, obtained her bachelor's degree in forensic science, and comes from a dysfunctional family.
• NBC has released the official guide of Law and Order: SVU season 15 episode 17 'Gambler's Fallacy'.This episode is slated to air on Wednesday, March 12 at 9PM ET. ROLLINS’ GAMBLING ADDICTION COSTS HER MORE THAN MONEY WHEN A MISSTEP PUTS HER ON THE WRONG SIDE OF THE LAW.

Law And Order Svu Amanda Rollins Gambling Series

Law and Order SVU 15×17 “Gambler’s Fallacy” – Detective Amanda Rollins’ (Kelli Giddish) addiction drives her to an illegal gambling club, where waitress Clare Wilson (returning guest star Stefanie Scott) recognizes her as a cop.

THEN AND NOW: All 18 'Law and Order: SVU' series regulars

• 'Law & Order' celebrates 30 years on TV this month — one of the most popular shows in the franchise, 'Law and Order: SVU,' wrapped its 21st season this year.
• Throughout the show's run, there have been 18 actors who have been cast as series regulars.
• Mariska Hargitay has played Detective Olivia Benson since the show aired in 1999. Ice-T is still on the show after joining in the second season.
• Actors like Stephanie March, BD Wong, and Richard Belzer have all returned to the series in guest appearances after leaving the show as a series regular.
• Visit Insider's homepage for more stories.

Over the course of its 20-year history, 'Law and Order: SVU' has become known for its lengthy list of guest appearances — from Serena Williams to Bradley Cooper. But the show's regular cast members have also been making a name for themselves throughout the years.

Law And Order Svu Amanda Rollins Gambler's Fallacy

Some of these actors have stayed on the show for decades, like Mariska Hargitay, Christopher Meloni, and Ice T, while others only appear for a season or two. Some even return in guest appearances after their departure.

Keep reading to find out when each actor joined the series and to see what they're up to now.