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Supergirl: Season4 | Episode9
Elseworlds (III)
Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives.
The crossover starts on The Flash S05E09 Elseworlds (I) and Arrow S07E09 Elseworlds (II).
S4 - E1American Alien Oct. 14, 2018
S4 - E2Fallout Oct. 21, 2018
S4 - E3Man of Steel Oct. 28, 2018
S4 - E4Ahimsa Nov. 04, 2018
S4 - E5Parasite Lost Nov. 11, 2018
S4 - E6Call to Action Nov. 18, 2018
S4 - E7Rather the Fallen Angel Nov. 25, 2018
S4 - E8Bunker Hill Dec. 02, 2018
S4 - E9Elseworlds (III) Dec. 11, 2018
S4 - E10Suspicious Minds Jan. 20, 2019
S4 - E11Blood Memory Jan. 27, 2019
S4 - E12Menagerie Feb. 17, 2019
S4 - E13
S4 - E14Stand and Deliver Mar. 10, 2019
S4 - E15O Brother, Where Art Thou? Mar. 17, 2019
S4 - E16The House of L Mar. 24, 2019
S4 - E17All About Eve Mar. 31, 2019
S4 - E18Crime and Punishment Apr. 21, 2019
S4 - E19American Dreamer Apr. 28, 2019
S4 - E20Will The Real Miss Tessmacher Please Stand Up? May. 05, 2019
S4 - E21Red Dawn May. 12, 2019
S4 - E22The Quest for Peace May. 19, 2019