Michael Emerson is joining Arrow Season 6.
The Person of Interest and Lost vet has signed on to recur on The CW series as a mysterious character...and he's so secretive, the powers that be are keeping details about who he's portraying (including his name) under lock and key.
Additionally, David Nykl (Anatoly Knyazev) will return for a guest spot.
Is Olicity back on? Why is Black Siren back full-time? Those answers and more!
Arrow, Season Premiere, Thursday, October 12, 9/8c, The CW
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