12. All for Nothing

Complete story — includes the ending

Oliver is almost out of money to pay James. Fearing he will detonate the bomb, Vince, who infiltrated James' organization, agrees to download data that could lead the two vigilante teams to where the bomb is located. Despite being successful in transmitting the data to Felicity, he is identified as the traitor, caught, and tortured by Anatoly. The location of the bomb is revealed, but Dinah, Curtis, and Rene decide not to follow Oliver in order to save Vince. However, James anticipates this and uses Vince as bait. Dinah is immobilized under collapsed rubble and is forced to watch Black Siren execute Vince. Lacking the manpower, Green Arrow and Spartan are unable to retrieve the bomb before it is relocated. However, they retrieve the falsified proof that shows Green Arrow killing James' son; the video was edited using the same technology that was used to forge the picture that exposed Oliver as the Green Arrow, implying another adversary is operating behind the scenes. Later that night, Oliver visits Dinah to see how she's doing. Dinah tells Oliver that she will get justice for Vince by murdering Cayden and his team starting with Black Siren. In flashbacks, Vincent and Dinah meet for the first time in Central City Police Department (CCPD), go on their first undercover mission to take out a drug dealer, and undergo their transformations from the particle accelerator explosion.