The Season 3 adventures of Arrow (based on DC Comics hero Green Arrow) find Starling City embracing Oliver Queen (Stephen Amell) as a hero in the wake of Slade's defeat. But, all is not well, as numerous adversaries quickly assault Queen and the city. Notably, he faces a cyber-terrorist and an obsessive stalker who dresses her victims in clothing to match the Arrow. Most seriously, though, a friend is murdered, and when the League of Assassins threaten to kill citizens of Starling City if the murderer isn't found, Queen finds himself in a life-or-death battle. Elsewhere, he and Felicity (Emily Bett Rickards) acknowledge their feelings for each other, but Queen is hesitant to make a commitment. Also, Arrow teams up with his friend the Flash (Grant Gustin) to stop a boomerang-wielding killer.