Doppelganger

"Doppelganger" is the fifteenth episode of the sixth season, and 130th episode overall of The CW series Arrow. The episode sees the return of former main character Roy Harper (Colton Haynes). It also sees the return of Thea donning her Speedy suit since the ninth episode of the fifth season. The episode stars Stephen Amell (Oliver Queen) who is joined by fellow main cast members David Ramsey (John Diggle), Emily Bett Rickards (Felicity Smoak), Katie Cassidy (Laurel Lance), Paul Blackthorne (Quentin Lance), Willa Holland (Thea Queen), Echo Kellum (Curtis Holt) and Juliana Harkavy (Dinah Drake). Main cast member Rick Gonzalez (Rene Ramirez) is also credited but does not appear in this episode. Synopsis The episode starts with Jean Loring, Oliver's solicitor in his impending trial coming to him hopeful that she could get the charges against him dropped due to Rene's testimony being illegally obtained. Quentin then walks in to inform Oliver that Laurel Lance / Black Siren from Earth-2 is posing as Earth-1's deceased Laurel Lance much to the disbelief of Oliver and Thea. Oliver, Thea and Quentin go to the Star City Police Department in the hope to stop Laurel from speaking to the press but they are too late. Meanwhile, Curtis visits Rene's daughter Zoe to explain to her what happened to her father. In a meeting with the Star City district attorney, he reveals to Jean and Oliver that they are no longer using Rene's testimony and instead using Roy Harper's. After learning that Roy is the witness, Felicity Smoak and John Diggle discuss the situation with Thea and Oliver. After Laurel is taken from the hospital Dinah and Quentin find that there is corrupt officers in the police department who takes her to Anatoly Kynazev. Oliver and Diggle fight about Oliver being the Green Arrow again. Thea decides to go back out to the field to save Roy, she successfully gets into the hotel room where Roy is being held and kisses him after watching him get tortured. When SWAT shows up to the hotel, Oliver pulls Thea out to save Roy later. Dinah and Quentin are tasked to find the corrupt police officers in the department. When Laurel tells them that Diaz has Roy and where he is, Oliver, Thea and Diggle get ready to go after him. Dinah offers to join them, but Oliver declines her offer due to trust issues.