Cisco said he was afraid of using too much power and killing Caitlin, but he just let her harm other friends like Barry? Dude, that's really poor reasoning. He used his power SOOOOO many times before and you just start to worry now?
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On a different topic, "We will ... . I promise." said Barry quickly many times when someone has a problem. Come on, you can't just use the word every single time. It becomes meaningless. It becomes something that you just say.
Review of I Know Who You Are
