شيلاه هورسدال

يشكّ غيديون في أن يكون مفجّر متسلسل تلميذ غريمه.

After Detective Lance arrests Oliver for murder, Oliver tells Moira that the only lawyer he'll allow to represent him is Laurel. Laurel takes the case, which puts her at odds with her father. Oliver offers to take a polygraph in front Detective Lance but things get tense when Lance asks him if anyone else was on the island with him. Oliver flashes back to the island, when he got his first scar, courtesy of DC villain Deathstroke (guest star Jeffrey Robinson).

Lex considers whether to turn an operative loose to obtain or fake damaging information against Jonathan to upset his Senatorial race. But when Lex is shot, he falls into a coma and is visited by the ghost of his mother, who shows him what his life could be like if he frees himself from his father. Meanwhile, Clark helps deliver Christmas presents.

Malcolm Merlyn returns. Oliver rallies his team as Slade's soldiers attack the city. Felicity gets a call from S.T.A.R. Labs with game-changing news and Thea comes face-to-face with her father – Malcolm Merlyn (recurring guest star John Barrowman).

Deathstroke hits Oliver at home. Oliver, Canary, Diggle and Felicity return to the lair and find Slade waiting for them. An epic battle breaks out and one member of Team Arrow is sent to the hospital. Thea hits her breaking point, but just as Oliver is about to reach her, Slade intervenes and Oliver is faced with a choice – his battle with Slade or his family. Meanwhile, Laurel struggles with a new secret.

When Frank Bertinelli (guest star Jeffrey Nordling) is arrested, Oliver knows it's only a matter of time before his daughter, Helena, aka The Huntress (guest star Jessica De Gouw), returns to town. To make matters worse, Laurel is picked to try Frank's case, putting her right in the path of Helena. Oliver tells Sara he will handle his ex-girlfriend, but when Helena takes hostages at the courthouse, including Laurel, the Canary will stop at nothing to save her sister. When The Huntress and Canary meet, an epic battle begins. Meanwhile, Roy realizes he needs to keep Thea safe, but doesn't like the way he is forced to go about it.