Board Thread:Supergirl discussions/@comment-807326-20170321001849/@comment-27399439-20170321154830

StorybrookeWarrior wrote: Steven Bomb 17 wrote: How does Music Meister know The Flash? The dimensional thingy? If there was no Harrison Wells on this Earth how did he get powers? Hope he also knows about Oliver and the Legends Even if he knows about the Legends, he won't find them. They can be any where in time.

How does Dr Stein end up in the crossover episode "Duet"?