Nora


 * For the eponymous character, see Nora West-Allen.

Synopsis
After an unexpected guest from the future, Nora West-Allen, appears at their home, Barry and Iris must figure out how to get her back to the future without disrupting the timeline, even more than she already has. Team Flash must work together to send Nora back, while simultaneously fighting off another villainous meta.

Trivia

 * Ralph mentions the possibility of Barry creating a timeline where he (Ralph) died in the particle accelerator explosion. Before Barry created and undid Flashpoint, Ralph did die in the particle accelerator explosion.
 * This is the sixth episode in the series not to feature Tom Cavanagh. However, a clip of him as Eobard Thawne (disguised as Harrison Wells) from is shown.
 * This episode features many references to older episodes:
 * The beginning and the end of the episode, when Nora explains her story, is a reference to the very first scene of the show, from.
 * Iris mentioned the time Barry traveled back in time and recruited Snart for help in.
 * Ralph mentions a possibility of a world where everyone is evil. This occurred through the events of Crisis on Earth-X, though Earth Two also fits this discription.
 * Ralph mentioned how Eddie killed himself in
 * Iris mentioned the time Barry traveled back to 2015 to get help from Thawne in.
 * Wally and Nora mentioned how he fought the ghost of Elvis Presley's brother, and how he met the actual Elvis Presley in the episode.
 * Nora mentions the time Barry ran on water to fight King Shark in.
 * When Barry taught Nora how to phase, a clip of Eobard Thawne (as Harrison Wells) teaching Barry how to do the same for the first time from was shown.
 * The picture Nora was looking on is the picture of Team Flash that Barry shot in.
 * Iris mentioned the time Barry tried to save her from getting killed by Savitar, which happened throughout the second half of.
 * Barry said "Nora shouldn't be here", which is one of the quotes he said after coming back from the Speed Force in (In that episode, it was thought that he was talking about his mother, who is also called Nora).
 * Nora mentions the time Barry used the tachyon prototype and accidentally traveled to Earth Thirty-Eight, where he met Supergirl for the first time in (the meeting itself was shown in 's ).
 * This is the first appearance of Barry's original Flash suit since, and the first time Barry wears it since . This is also the first time the suit is shown with the red emblem since.
 * This is also the only episode to include all of the suits.
 * Nora mentioned a battle involving King Shark and Grodd. This references a possible future episode in the second half of the season that executive producer Todd Helbing mentioned on the 2018 Comic-Con Panel.
 * This episode marks the first time in the Arrowverse that a season starts right where the previous season ended, as this episode takes place right after.
 * In the comics, Ryan Choi, the man who made the suit Nora gave to Barry, became Ray Palmer's successor as the Atom.
 * Nora mentions that in the future, Barry will fight Mob Rule, who in the comics was named Manuel Lago and was introduced in the New 52 era, and was an old friend of Barry Allen as well as one of the very first meta-humans he fought.
 * The Flash family phasing the crashing plane through the buildings and into the water is an adaptation of when Barry did the same thing in the third issue of his New 52 comic, with the shot of the plane hitting the water a direct copy from the comic.
 * The slang Nora often says in this episode, "schway", originated as an expression said in the animated series Batman Beyond by many of the teenage characters of the future Gotham City.
 * Nora and Barry mention Happy Harbor in Rhode Island which, in the DC comics, is a fictional location where the first headquarters of the Justice League was established.
 * This is the first episode of to be named after someone in a civilian sense.