Elseworlds, Part 2

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"Things were looking a little grim, but part of me was, admittedly, a little excited for a 'reunion' of old friends." —Cisco Ramon[src] This episode is part of a larger crossover series, [[|]][[Category:Broken Cross link|]].

"Elseworlds, Part 2"
Information
Season 7 » Episode 9
Episode number	147 of 170
Original airdate	December 10, 2018
Written by	Teleplay by: Marc Guggenheim Story by: Caroline Dries
Directed by	James Bamford
Guest stars
Grant Gustin as Barry Allen/Green Arrow (special guest star) Danielle Panabaker as Caitlin Snow/Killer Frost (special guest star) Carlos Valdes as Cisco Ramon (special guest star) Tyler Hoechlin as Black Suit Superman (special guest star) Melissa Benoist as Supergirl (special guest star) Jeremy Davies as John Deegan Ruby Rose as Kate Kane/Batwoman LaMonica Garrett as Mar Novu/The Monitor Bob Frazer as Roger Hayden/Psycho Pirate Cassandra Jean Amell as Nora Fries Liam Hall as Joe Wilson John Wesley Shipp as Barry Allen/Flash John Barrowman as Malcolm Merlyn/Dark Archer (special guest star) Tom Cavanagh as Eobard Thawne/Reverse Flash (special guest star)
Chronology
Preceded by	"Unmasked"
Followed by	"Shattered Lives"
Elseworlds
Preceded by	"Elseworlds, Part 1"
Followed by	"Elseworlds, Part 3"

"Elseworlds, Part 2" is the ninth and midseason finale episode of the seventh season of Arrow, and the one-hundred-forty-seventh episode overall. It aired on December 10, 2018. The episode will be the second of the three-part crossover with the ninth episode of the fifth season of The Flash, and the ninth episode of the fourth season of Supergirl.

Synopsis

With Oliver and Barry still stuck in the other’s bodies, the two get a lead on John Deegan and head to Gotham City with Supergirl to figure out why their reality has changed. While there, they meet the mysterious Kate Kane who provides them with information that leads the group to Arkham Asylum.

Trivia

• The episode was previously titled "Hour Two".
• The inmate rooms inside of Arkham Asylum contained nods to several Batman villains on each door except for one that references writer and former showrunner Marc Guggenheim.
  • Oswald Cobblepot, Pamela Isley, Basil Karlo and Edward Nigma are the real names of Penguin, Poison Ivy, Clayface and The Riddler respectively.
• Some of the locations in Chicago that were filmed in this episode were the same locations used in The Dark Knight trilogy to replicate Gotham City.
• Bruce Wayne, or Batman, is constantly referred to during the episode. He has been referenced by numerous people before, including Rip Hunter, Kara Danvers, Winn Schott etc.
• The wifi password Kate gave to Oliver, Barry and Kara references Batman's butler Alfred Pennyworth.
• When Oliver (as the Flash) misaims a lighting bolt, the gas released falls out of a box labelled Crane, J. This is a reference to Jonathan Crane, or the Scarecrow, one of Batman's greatest villains.
• Digger Harkness' boomerang, and Bane's mask from The Dark Knight Rises can be seen inside of Deegan's lab.
• Kara finds a William Shakespeare bust in a box which is a reference to the 1960's Batman TV series where it has a button to the entrance of the Batcave.
• A Gotham police officer mentions Nolan and Burton streets. This may be an homage to Christopher Nolan and Tim Burton, two directors of Batman films.
• The Earth-Ninety Barry mistakens John Diggle for John Stewart who in the comics is one of the characters who become Green Lantern.
• Barry narrates the opening introduction due to the switch where he's the Green Arrow.
• Stephen Amell and Cassandra Jean Amell are husband and wife in real-life.
• At the end of the episode, the Monitor reveals that he is preparing them for a "Crisis". This ties in with the red skies emerging in the first two parts of the crossover. Both are a reference to the Crisis story arc, which includes Crisis on Infinite Earths, Infinite Crises, and Final Crisis.