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In the comics, Godspeed, or August Heart, was both an ally and an adversary to the Flash at various points. This week will also presumably contain the first appearance of Godspeed.
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Yes, his existence in that time is very confined, but it’s likely that any big change would affect him somewhere along the way. But what if it wasn’t? Grace has already broken through, so whatever damage she did to the timeline should start to show up at some point, right? But so far as we know nothing in Thawne’s future time has changed. Then when Grace showed up it seemed like that timeline might have been her. A few episodes ago, Thawne told Nora that there was a new timeline trying to break through. And she might not be their biggest problem. So now Grace has the original Cicada dagger, as well as the knives she brought with her from the future. She even took it even a step further by killing Orlin when he urged her to think about what she was doing rather than just killing everyone who got in her way. Also Grace fully took on the Cicada persona by picking up her uncle’s mission to eradicate all the meta humans.
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In that episode Sherloque told everyone the truth about Nora’s connection to Thawne, but only after Thawne had urged Nora to tell Barry herself. The Flash has been on a mini-hiatus for a few weeks, but the final episode before the break certainly gave enough food for thought. Where can you find this weeks episode of The Flash online?