THE FLASH – Tuesday, March 2, 2021, at 8pm on CW50

SEASON PREMIERE – When an experiment to save Barry’s (Grant Gustin) speed backfires, Nash Wells (Tom Cavanagh) searches for a way to save The Flash and comes up with a dangerous plan.

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Meanwhile, Iris (Candice Patton) makes a startling realization inside the Mirrorverse and Cecile (Danielle Nicolet) faces off with Rosa Dillon (guest star Ashley Rickards).

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Alexandra La Roche directed the episode written by Sam Chalsen & Lauren Certo (#701).

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Original airdate 3/2/2021.