UPDATE: ARROW: Special "Full Circle" 3-Minute Preview From This Week's Episode, 'The Promise'

THE TURNING POINT — Oliver (Stephen Amell) is shocked when he learns that Slade (Manu Bennett) has come to Starling City. Back on the island, as Oliver, Slade and Sara (Caity Lotz) prepare to take over the freighter from Ivo (guest star Dylan Neal), Sara pulls Oliver aside and tells him he needs to kill Ivo to prevent him from telling Slade what happened with Shado. Oliver feels immense guilt over the situation but realizes Slade’s growing rage from the Mirakuru makes him unpredictable and he could turn on his friends if he thinks Oliver is to blame. Oliver agrees to kill Ivo and the battle begins. Glen Winter directed the episode written by Jake Coburn & Ben Sokolowski

Arrow is a modern retelling of the DC Comic character Green Arrow. Multi-millionaire playboy Oliver Queen is missing, and presumed dead after a shipwreck at sea. He is found five years later, having survived on a desert island off his wits and by mastering the bow and arrow. When he returns to Starling City however, he discovers that it is rife with corruption and crime. Oliver decides to put his skills to use by taking on the persona of Arrow and becoming the vigilante that Starling City needs.