Oliver and Diggle race to rescue Thea, while Felicity, Curtis and Noah join together to stop Darhk.
Cast: Stephen Amell, Katie Cassidy, David Ramsey, Willa Holland, Emily Bett Rickards, John Barrowman, Paul Blackthorne, Neal McDonough, Echo Kellum, Jimmy Akingbola, Alexander Calvert, Tom Amandes, Janet Kidder, Elysia Rotaru, Nolan Gerard Funk