Top 10 moments from 'The Flash:' 'Welcome to Earth-2'

10. Goodbye

After Iris and Barry share a goodbye, he goes to S.T.A.R Labs to get ready to go to Earth-2 with Cisco and Harrison. Once they leave, however, the space they went through becomes stable due to the travel between worlds. This means that Jay has only a limited time to fix it or else they won’t get Cisco and Barry back.

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