Katie Cassidy (born November 25, 1986) is an American actress. She portrayed Ruby in Season 3 episodes The Magnificent Seven, The Kids Are Alright, Sin City, Malleus Maleficarum, Jus In Bello, and No Rest For The Wicked and Lilith in the Season 3 episode No Rest For The Wicked. She has also appeared in Melrose Place, Gossip Girl, and Taken. She is currently a series regular on Arrow as Laurel Lance, a role that she also portrays occasionally on its spin-offs: The Flash and DC's Legends of Tomorrow.