Duration: 42m

TV-14 8.0 Action / Sci-Fi / Crime / Drama / Adventure

Arrow S4E12

Team Arrow faces The Calculator, while Nyssa returns and Roy Harper makes an appearance.

Release Date: February 3, 2015 (USA)

Creator: Marc Guggenheim, Andrew Kreisberg & Greg Berlanti

Cast: Stephen Amell, David Ramsey, Emily Bett Rickards, Katie Cassidy, Paul Blackthorne, Willa Holland, Rick Gonzalez, Colton Haynes, John Barrowman