- "I know I called you a murderer, but you are not. You are a hero. You beat the island. You beat my father. So fight, Oliver. Get up and fight back."
- —Oliver's hallucination of Tommy inspiring him to fight back
After a fight with Cyrus Gold AKA the Acolyte, Oliver is drugged and left for dead. Determined to cure him, Felicity makes a risky decision. The cure causes Oliver to hallucinate, and what he sees forces him to confront his past. Meanwhile, Barry continues to help Felicity, and their connection grows stronger. The Arrow asks Lance to look into Gold, but when the stakeout on Gold goes bad, someone gets killed. Roy is captured and tortured by Brother Blood.
After being rendered unconscious by a tranquilizer dart to the neck, Barry awakens in the Arrow's lair. Disoriented and confused, he is taken a back to see the Arrow sprawled out on a table. Felicity steps forward and begs home to save Oliver. Realizing that Ollie's blood is rapidly coagulating, Barry improvises a blood thinner from rat poison. Oliver awakens and immediately becomes angry that Felicity has revealed his secret. He storms off leaving Felicity, Diggle and Barry a little hurt. Back at Queen's house, Thea reveals that Roy did not go to the hospital and needs aid. Oliver removes the arrow and calls for John to come over with a First Aid kit. Oliver starts to hallucinate, as well as a flash back with Slade dying, Oliver, Shado, Sara being held at gunpoint and led outside the sub. Ivo makes Oliver choose either Shado or Sara to choose to die in 30 seconds. Oliver went back to the Arrow's hideout, and asked about side effects from Barry, who agrees to run some tests. Barry and Felicity are able to identify and locate Oliver's attacker, Cyrus Gold. While continuing to discover the truth behind the death of Sin's friend Max, Roy breaks into an office to steal some files. When he is discovered, he makes a break for it, but is caught off guard by Cyrus Gold. Upon running into Gold's arm, Roy is knocked out. He awakens, bound to a chair before Sebastian who injects him with the Mirakuru serum. Oliver arrives and begins to battle Cyrus. Roy writhes in agony from the effects of the serum and eventually passes out, with blood running from his eyes. Momentarily defeated by Cyrus, Oliver has another hallucination, this time involving Tommy who encourages him to keep on fighting and stop Cyrus. Oliver snaps out of it and then destroys the remaining serum and wounds Cyrus. He then tends to Roy who has stopped breathing. He begs him to fight and eventually Roy is revived. Oliver goes to the lair and relays his worries to Felicity that the serum may affect him negatively. Roy wakes up in Thea's room with Thea and Max worried about where he went. When the girls leave, Roy moves the sheets and realizes his wounded knee has heralded. It is revealed that the mastermind of this is Slade (alive and all), he states that new Mirakuru can be made with his blood and he will corrupt or kill "The hood's" followers or the ones he loved before killing him by driving an arrow through his eye. He orders Blood to leave the vigilante alone for his plans. In flashbacks, Ivo kills Shado, but flees when Slade turns up with super-human strength and kills his men. Back at the lair, Oliver realizes Barry is gone and regrets the way he treated him before. He is warmed to see that Barry left a green domino mask for Oliver, to better hide his identity. Barry calls Felicity to say goodbye and arrives home in Central City. During a lightening storm, the new particle accelerator being unveiled at STAR Labs malfunctions. While trying to seal up his lab, Barry notices the liquids surrounding him levitating and witnesses the power outage from the accelerator. Suddenly, a bolt of lightening strikes him through the skylight, sending him backwards into several shelves. As he lay there unconscious, a small surge of red lighting runs over Barry's temple. Felicity helps Oliver put on his new mask.
- The three "ghosts" who appear to Oliver are a reference to Charles Dickens' A Christmas Carol. In following this, Shado is that of the past, with Slade representing Oliver's current self doubts, and Tommy finally offering redemption and a future for Oliver.
- Slade in the present day has an eye patch and his hair appears to be greying, both elements which are usually present on Slade's character.
- Reporter "Linda Park" is a reference to the third Flash Wally West's wife, who would later appear in person on The Flash.
- This is the only episode in the Arrowverse that include both Colin Donnell and Grant Gustin.
- In one of the relatively few direct references to her Judaism, when Barry asks what Felicity will be doing for Christmas she replies, "Lighting my menorah."
- This episode talks about the English nursery rhyme, "Solomon Grundy", stating that it's about the seven stages of life.
- When Oliver hallucinates Slade and tries to fight him and cannot touch him, it strongly references the animated series the Teen Titans episode: "Haunted" in which Robin hallucinates Slade (which has been caused by a chemical reagent) and tries to fight him to which Slade is not there due to him died in the season 2 finale.
Preparation ran from October 1 until October 9, 2013. Shooting ran from October 10 until October 22, 2013.
|Arrow season 2|
|"City of Heroes" • "Identity" • "Broken Dolls" • "Crucible" • "League of Assassins" • "Keep Your Enemies Closer" • "State v. Queen" • "The Scientist" • "Three Ghosts" • "Blast Radius" • "Blind Spot" • "Tremors" • "Heir to the Demon" • "Time of Death" • "The Promise" • "Suicide Squad" • "Birds of Prey" • "Deathstroke" • "The Man Under the Hood" • "Seeing Red" • "City of Blood" • "Streets of Fire" • "Unthinkable"|