Katherine Evelyn Anita Cassidy (born November 25, 1986) is an American actress who stars as Laurel Lance/Black Canary on The CW series Arrow. She has also appeared on the CW shows Supernatural, Melrose Place, and Gossip Girl; on the CBS miniseries Harper’s Island; and in the films When a Stranger Calls (2006), Black Christmas (2006), Taken (2008), A Nightmare on Elm Street (2010), Monte Carlo (2011), and The Scribbler (2014).