Inmate 4587


 * For the eponymous character, see Oliver Queen.

Synopsis
Following Oliver’s shocking decision to turn himself over to the FBI and reveal his identity as Green Arrow to the public, Oliver has spent the past five months in Slabside Maximum Security Prison. Determined to keep a low profile to shorten his sentence for the sake of his family, Oliver is tested when he runs into old foes. Meanwhile, Diggle and Dinah have taken on new jobs and left their costumes behind but not everyone is following suit. With her focus on William, Felicity tries to start over but when someone from her past resurfaces, things become complicated.

Trivia

 * The title of this episode references Oliver's prison number.
 * The number pays homage to Vince Terranova's "ident code" from the TV show Wiseguy. In addition, 4587 appeared twice on DC's Legends of Tomorrow as the warehouse number and the Legends cell block number in and  respectively.