Arrow 4×12
The team faces off against a formidable villain nicknamed The Calculator. Meanwhile, Nyssa makes her move and Roy Harper returns to Star City.
Serie: Arrow
Director: Kevin Fair
Guest Star: Colton Haynes, Echo Kellum, Elysia Rotaru, Janet Kidder, Jimmy Akingbola, Katrina Law, Parker Young, Rila Fukushima, Tom Amandes