is facing a hostile takeover by Isabel Rochev (played by Summer Glau ).

: Devastated that Tommy saw him as a murderer, Oliver vows to stop killing. He captures the "Hoods" without lethal force, signaling his transition from vigilante to hero.

Following the death of his best friend, , Oliver retreats to Lian Yu. He seeks penance in isolation, but Felicity Smoak and John Diggle aren't having it. In a classic "Team Arrow" moment, they track him down and parachute onto the island to bring their friend home. 🏙️ A City Under Siege Starling City has changed for the worse: The Glades lie in literal and economic ruins.

: In a role reversal, Quentin Lance (now a beat cop) supports the vigilante, while Laurel (at the DA's office) vows to bring him down.