Crisis on Earth-X, Part 3 (408)

[GateWorld]

THE FLASH - SEASON FOUR
CRISIS ON EARTH-X,
PART 3
EPISODE NUMBER - 408

Supergirl finds herself captive of the invaders from a dark, parallel Earth, who wish to take her heart to save the life of one of their own. Meanwhile Oliver, Barry, and Earth's other heroes must escape a Nazi camp on Earth-X -- with help from that planet's own heroes Ray and Citizen Cold.

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[Jeffer]

I like crossover episodes but when it's like this one and I don't watch the other 3 shows it kinda sucks. I think it's dumb that they had Barry and Iris's wedding on a different show.

[Annoyed]

I feel your pain. The only one I watch is Supergirl.

[LtColCarter]

I found this one enjoyable as well. Since it was a crossover, I didn't mind seeing the wedding on another show.