Digger Harkness - aka DC's Captain Boomerang - is headed to Starling City for Arrow Season 3! According to EW.com, Nick Tarabay, who played the scheming Ashur on Starz' Spartacus, has signed on for a multi-episode arc as a villain who has both comic connections to The Flash and the Suicide Squad. On Arrow, Harkness will be a "former A.R.G.U.S operative, highly skilled in martial arts and espionage, with a deadly thirst for vengeance against his former employers." Nick Tarabay, Captain Boomerang.Continue reading…