When Arrow launched an entire universe or two of superhero TV in 2012, one of its most audacious moves—beyond like, being good; it was a dark time for superhero TV!—was to immediately set comic book fans’ heads on fire with the mother of all teases: Deathstroke’s mask nonchalantly sitting on the shore of Oliver’s…
Source: io9 – Turns Out the Real Story Behind Deathstroke’s Arrow Debut Is Just as Noncommittal as the Show’s Own Explanation