The Flash Adds Mad Men Alum as Captain Cold’s Sister

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Access Hollywood brings word that former “The Tomorrow People”  and “Mad Men” star Peyton List has joined the cast of “The Flash” as Lisa Snart, the sister of Leonard Snart, AKA Captain Cold (played by Wentworth Miller on the series).

Lisa will attempt to join up with her brother’s “Rogues” gang in the series, much like she did in the source material where she went by the supervillain name Golden Glider. She’ll make her debut in the show’s 16th episode.

“The Flash” will return on Tuesday, January 20, 2015 with its tenth episode titled “Revenge of the Rogues.” You can check out the promo for that episode in the player below.

(Photo Credit: Brian To/WENN.com)