Billionaire playboy, Oliver Queen, has been considered dead for five years. Now, he has returned. But something, during those five years, has changed him into a mysterious green hooded archer.

Arrow moves further along his father's list while battling family issues with his mother, Moira, and especially with his sister. He also makes amends for past difficulties with Laurel.

A mysterious sniper called Deadshot is taking out bidders at an auction for an industry company. The bidders include Oliver's stepfather, Walter Steele.

Peter Declan has been charged with murdering his wife, and only Oliver believes he's innocent. Arrow asks Laurel to look into Declan's case. Meanwhile, Walter investigates a warehouse that Moira mysteriously bought with the company's money.

A new vigilante is killing off the people that work for mob boss Frank Bertinelli.

Oliver Queen attempts to train Helena Bertinelli in the hopes that she will join him in his fight for justice. Meanwhile, Walter Steele delves deeper into his wife's secrets.

Oliver Queen attempts to track down a mysterious copycat vigilante who is killing people on the list.

After Thea gets in trouble with the police, Oliver turns to an old flame - now a vice cop - to help track down the creator of a new designer drug with lethal after-effects.

Quentin Lance's ongoing attempt to capture the vigilante is put to a halt when a recently released criminal kidnaps his daughter to get to Arrow. Meanwhile, John Diggle insists on spying on Moira Queen to learn her secrets.

A jewel thief named Dodger strikes Starling City, a purse snatcher targets Thea and dating anxiety hits Oliver and Diggle. Each perilous situation leads to hard choices.

Helena is back to seek vengeance, but Oliver still has feeling toward her. The Arrow must stop and kill her, but at what costs? Now that several of his closest friends know about his true identity, no one is safe.