Via: TV Guide
Oliver Queen’s worst nightmare has come true on Arrow.
Although Oliver (Stephen Amell) believed his former friend-turned-dangerous enemy Slade Wilson (Manu Bennett), aka Deathstroke, to be dead, he is very much alive. Slade is actually the mastermind behind the attempted creation of super soldiers in Starling City that has left Roy Harper (Colton Haynes) forever changed.
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Posted: March 4th, 2014