14. The Return

Complete story — includes the ending

While on the island of Lian Yu, Oliver begins Thea's training. He goes to the A.R.G.U.S. prison to visit with Slade, but discovers the guard dead and Slade missing. Oliver warns Thea and they find out that Merlyn had Slade freed as a part of their training. Slade arrives and captures them, imprisoning them in the A.R.G.U.S. cell. The duo manage to open the doors and escape. Oliver reveals to Thea that she killed Sara. Slade arrives and engages them in combat. Oliver dissuades Thea from murdering Slade, who gets imprisoned back in the cell. The Queens return to Starling City, where Thea confronts Merlyn for forcing her to kill Sara. Thea decides to work with him to fight Ra's, but denounces their personal relationship. Quentin blames Laurel for hiding the truth. In flashbacks, Oliver and Maseo start tracking an employee of Queen Consolidated who is associated with Chien. Oliver looks in on his family and learns that Thea is using drugs. Oliver and Maseo acquire the virus and arrest Chien. Oliver is introduced to General Matthew Shrieve, who promises to free him after he is debriefed in China.