Ep 10. Left Behind

Oliver Queen, aka The Arrow, has disappeared following his battle with Ra's al Ghul on the mountain. His team is left behind to pick up the pieces and keep the city safe in his absence. Meanwhile, Roy struggles to come to terms with his recent actions as a masked vigilante and Laurel sets out to take on crime in her own way. But as they try to fill the void left by Oliver, a new threat emerges in Starling City. An ominous figure known as the Ghost is wreaking havoc and the team must come together to stop him before it's too late. Left Behind is an intense and emotional episode that explores the aftermath of Oliver's disappearance and sets the stage for the rest of the season.