DIGGLE VS. SHADOWSPIRE: Diggle (David Ramsey) must learn to trust his brother Andy (Guest Star Eugene Byrd) 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 (Stephen Amell) has to learn a whole new way of life. Charlotte Brandstrom Directed The Episode Written by Brian Ford Sullivan & Emilio Ortega Aldrich.