14. The Sin-Eater

Complete story — includes the ending

Oliver meets Prometheus' alleged mother, but she refuses to help him. During a prison transfer, Chien Na Wei, Carrie Cutter, and Liza Warner kill the guards and escape. Oliver appoints Dinah as an SCPD officer. Frank Pike receives evidence that the Green Arrow killed Malone and orders a manhunt. Oliver and Quentin track down the trio, but they escape due to the intervention of the Anti-Crime Unit (ACU). Oliver surmises that Prometheus is responsible for sending the evidence. Oliver denies being the Green Arrow to Susan. Thea discredits her by having Felicity hack Susan's files and insert proof that she committed plagiarism. Susan gets angry with Oliver, who then confronts Thea. He reveals the circumstances surrounding Malone's death to Pike. The team intercepts the trio stealing money from a stash left by Church, but are ambushed by their mercenaries. The ACU arrives and arrests the trio, allowing the team to leave. Quentin gives Dinah his blessing to assume the Black Canary identity. Word of the cover-up is later leaked to the media and the allegations are serious enough that impeachment is on the table. In flashbacks, Oliver and Anatoly engage Gregor and his men. Gregor prepares to kill Anatoly.