Diggle must learn to trust his brother Andy when an enemy of their wartime past, an agent of the criminal organization Shadowspire, pays a visit to Star City. However, Diggle learns more than he bargained for about their shared time at war. Meanwhile, Oliver has to learn a whole new way of life.
Elenco: Stephen Amell , David Ramsey , Katie Cassidy , Willa Holland , Paul Blackthorne , Emily Bett Rickards , Echo Kellum , Colton Haynes , Rick Gonzalez , Juliana Harkavy , John Barrowman , Susanna Thompson , Manu Bennett , Colin Donnell , Josh Segarra , Sea Shimooka , Ben Lewis , LaMonica Garrett , Katherine McNamara , Joseph David-Jones , Stephen Amell , Summer Glau , Susanna Thompson , Sussana Thompson , Willa Holland .