Reversal (604)

[GateWorld]

ARROW - SEASON SIX
REVERSAL
EPISODE NUMBER - 604

Black Siren reemerges in Star City as an assassin for hire, but the team suspects a connection between her seemingly nondescript targets. Meanwhile Alena comes to Felicity to plea for help in a terrifying plot conceived by Cayden James, the genius criminal Helix helped to free from A.R.G.U.S.

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[Cmdr Sean Coll]

I was pleasantly surprised that Cayden James is portrayed by Michael Emerson. Cayden is like Harold Finch's evil twin from Person Of Interest. Maybe his plans is to bring about an evil machine (AI).

[Teddybrown]

I thought that