Question: crisis on earth x part 3 release date
Answer: son 6 , Episode 8 The Flash ( part 3 ) Season 4 , Episode 8 Legends of Tomorrow ( part 4 ) Season 3 , Episode 8 Directed by Larry Teng ( Supergirl ) James Bamford ( Arrow ) Dermott Downs ( Flash ) Gregory Smith ( LoT ) Story by Andrew Kreisberg Marc Guggenheim Teleplay by Robert Rovner ( Supergirl ) Jessica Queller ( Supergirl ) Wendy Mericle ( Arrow ) Ben Sokolowski ( Arrow ) Todd Helbing ( Flash ) Phil Klemmer ( LoT ) Keto Shimizu ( LoT ) Original air dates November 27 , 2017 ( 2017 - 11 - 27 ) ( 1 & 2 ) November 28 , 2017 ( 2017 - 11 - 28 ) ( 3 & 4 ) Episode chronology Supergirl ← Previous `` Wake Up '' Next → `` Reign '' List of Supergirl episodes Arrow ← Previous `` Thanksgiving '' Next → `` Irreconcilable Differences '' List of Arrow episodes The Flash ← Previous `` Therefore I Am '' Next → `` Do n't Run '' List of The Flash episodes Legends of Tomorrow ← Previous `` Welcome to the Jungle '' Next → `` Beebo the God of War '' List of Legends of Tomorrow episodes Preceded by `` Invasion ! ''