Top 10 moments from 'The Flash:' 'The Reverse-Flash Returns'

7. Doppleganger

Caitlyn gets an idea that they can save Jay by replacing dead cells from the live cells from his doppleganger. She asks Barry for help, but they can’t find their Earth’s Jay Garrick. Jay later finds out and shows Caitlyn that his doppleganger, Hunter Zolomon, is a regular person and has a different DNA structure from him.

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