[SPOILER ALERT] Please stop reading if you do not want to read information concerning a future episode of Arrow.
As previously reported in an earlier article, Deathstroke will return this season in episode 60, The Return.
TVLine approached the producers of Arrow and got confirmation from executive producer, Andrew Kreisberg, that Slade Wilson, will indeed return in the present. Kriesberg says, "When he comes back, he’s out for blood,” which raises questions as to who will be on Slade's radar, since Oliver may be unavailable due to his "death."
The last time viewers saw Slade, was when he was imprisoned in the A.R.G.U.S. super max prison. It is possible that he may target Felicity, since she was the one responsible for taking away Slade's powers but Slade might follow a whole different agenda.
Arrow returns with an all new episode on January 21, on The CW.