Access Hollywood reports that "The Tomorrow People" alum Peyton List has been added to "The Flash" cast as Lisa Snart, younger sister to Wentworth Miller's Leonard Snart. Access Hollywood described the character as "a wild child and anxious to prove to her older brother she's got what it takes to be in his criminal gang. She is sly, charming, and even a little sadistic. She's also not afraid to use her sexuality to get what she wants, which will put her on a collision course with S.T.A.R. Labs employee and friend of The Flash -- Cisco Ramon." List will first appear as Lisa Snart in the series' 16th episode, "Rogue Time."

Most comic book fans will know Lisa Snart better as Golden Glider, one of The Flash's rogues. In comic book lore, Lisa was a figure skater with the ability to spin at incredible speeds, who vowed revenge on The Flash after her paramour the Top was killed battling the scarlet speedster. She was eventually killed by the villain Chillbane.

In addition to Cara on "The Tomorrow People," List has played Jane Sterling on "Mad Men" and Lindsey Beckwith on "90210" with roles in "House of Lies" and "Hawaii Five-0." This isn't List's first time on a CW-airing comic book show -- the actress actually played Lucy Lane on "Smallville" in 2005, then again in 2010.

"The Flash" returns on The CW January 20.