Alex Kingston, Katie Cassidy

Alex Kingston has joined the cast of Arrow in a recurring role, Entertainment Weekly reports.

The ER alum has been tapped to play Dinah Lance, the mother of Laurel (Katie Cassidy) and the ex-wife of Det. Lance (Paul Blackthorne). Dinah will return to Starling City later this season — wearing black fishnets? — to make amends with her family, whom she abandoned after the death of her other daughter on The Queen's Gambit.

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Kingston, well known for playing Dr. Elizabeth Corday on ER,  recently had a recurring role on Doctor Who.

Arrow airs Wednesdays at 8/7c on The CW.