Arrow -- "The Scientist" -- Image AR208a_0322b -- Pictured (L-R): Stephen Amell as Oliver Queen and Susanna Thompson as Moira Queen -- Photo: Cate Cameron/The CW -- © 2013 The CW Network. All Rights Reserved

Arrow -- "The Scientist" -- Image AR208a_0322b -- Pictured (L-R): Stephen Amell as Oliver Queen and Susanna Thompson as Moira Queen -- Photo: Cate Cameron/The CW -- © 2013 The CW Network. All Rights Reserved