The trailers for Crisis on Infinite Earths provide a few teases of what to expect from the story of the upcoming crossover.
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Lyla --as the Harbinger -- recruits heroes for the Crisis.
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Cisco suits up as Vibe again, even though he currently doesn't have any powers.
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Superman's torn cape is a homage to the Death of Superman comic.
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This could mean that one of the three Supermen will die in the Crisis.
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Black Lightning makes a remark that indicates that his Earth has been destroyed.
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The Flash runs on his cosmic treadmill from the comics.
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He may need the treadmill to fulfill his destiny and save the multiverse.
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