I was trying to watch s04e08 of The Flash and I realised that the storyline was based on something that began from another CW show. I've seen this before but, it began with The Flash so it was easier to follow. I checked The Arrow s06e08 and it seemed to be another continuation. What's the cross over sequence to follow whats happening on The Flash?


The order is as follows:

  1. Supergirl S3E8 Crisis on Earth-X Part-1

  2. Arrow S6E8 Crisis on Earth-X Part-2

  3. Flash S4E8 Crisis on Earth-X Part-3

  4. Legends of tomorrow S3E8 Crisis on Earth-X Part-4

Then watch Flash Episode 9


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