Special Guest Stars Echo Kellum as Curtis Holt Katie Cassidy as Laurel Lance (Earth Two) / Black Siren Guest Stars Venus Terzo as Dr. Elisa Schwartz James Cutler as Grant Wilson / Deathstroke Co Starring Keri Adams as Bethany Snow Eliza Faria as Zoe Ramirez Andrew Chin as Perp Jason William Day as Officer Bill Morris as Macmillian Fairfield Susan Hanson as Evelyn Fairfield Kyle Mosonyi as Uniform