Season Four

Run, Iris, Run

The Flash (416) - Run, Iris, Run
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An encounter with a bus meta with the power to swap people’s DNA leaves Iris infused with Barry’s speed. While Iris takes on the speedster mantle to defend Central City, a de-powered Barry must adjust to his new role behind the desk at Star Labs. Meanwhile, Harry builds his own “Thinking Cap” to try and keep up with DeVoe.

U.S. air dates are in MM.DD.YY form.   U.K. air dates are in DD.MM.YY form.

News & Spoilers


Team Flash confront a new bus meta, Matthew AKA Melting Pot (guest star Leonardo Nam), who has the ability to swap people's DNA. During a battle with Team Flash, Matthew accidentally takes Barry's (Grant Gustin) speed away and gives it to Iris (Candice Patton). Now, with a new threat unleashed on Central City, Barry must act as the team leader while Iris takes on the mantle of superhero speedster in order to defeat their new foe.

Harry Jierjian directed the episode written by Eric Wallace (#416).