Arrow Season 6, Episode 20 : Shifting Allegiances

Oliver turns to an old friend to help battle Diaz. Meanwhile, Rene is out of the hospital but has a hard time re-adjusting to life as Wild Dog. Also, Lance discovers something shocking about Black Siren. Guest Stars: Kirk Acevedo, Gina Ravera, Carlos Sanz, Liza Cosier, Daryl Ducharme, Myles Edmund, Petar Gatsby, Chad Humeniuk, Katerina Katelieva, Gus Khosrowkhani, Simon Longmore, Daniel Romolliwa, Ardy Ramezani, Nick Thorp, Gregory Tunner, Kathleen Gati, David Nykl, Keri Adams, Eliza Faria, Jack Moore,

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