The pressure mounts for Oliver who begins to wonder if he will lose everything in his battle to save Star City. A familiar face returns.

While performing his first solo surgery, Dr. Shaun Murphy alienates a nurse, which puts his residency in jeopardy. Dr. Neil Melendez disagrees with Dr. Audrey Lim on a risky surgery….

Oliver and Thea are shocked to hear that Roy Harper is back in Star City. However, when they discover the circumstances of Roy’s return, Oliver and Thea realize that Roy…

Oliver celebrates Thanksgiving with his family but the happy moment is interrupted. Meanwhile, Black Siren returns to wreak havoc on the holiday.

Sam and Dean investigate a string of suicides committed by people with little in common other than the identical, grisly method of death – slow, self-administered disembowlment. All of the…

Dr. Neil Melendez, Dr. Morgan Reznick and Dr. Claire Brown grapple with a patient’s wish to perform an operation that would keep him from acting on his pedophilic urges; and…

Morgan and Shaun’s indecision on how to treat a young violinist who visits the ER with an infected finger could affect her future in more ways than one. Meanwhile, Lim,…

The Count has a new scheme to turn Starling City’s residents into clients by addicting them to a new drug and then selling them Vertigo to cure it. among those…

A.R.G.U.S. abducts Diggle and asks him to help recover Lyla from a Russian prison. Oliver and Felicity insist on going along to help and Isabel tags along. Meanwhile, Jean Loring…

Oliver puts Sara Lance up at the manor and soon discovers that she doesn’t want to contact her family… both because she would put them in danger, and because she…

When a dangerous criminal from Lance’s past escapes from prison, Felicity offers herself up as bait so Arrow, Diggle and Lance can capture him…but plans go awry.

Sam and Dean investigate a brutal death and discover that the killer is a lycanthrope: a werewolf.