Season Two

Flash Back

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Determined to learn how to go fast enough to stop Zoom, Barry decides to travel back one year into the past and pose as his younger self to gain intel from none other than Eobard Thawne. But when a ghoulish Time Wraith follows him back, Barry must improvise to stop the creature and avoid changing the timeline.
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News & Spoilers

A MOMENT IN TIME GETS BARRY ONE STEP CLOSER TO ZOOM; ANDY MIENTUS RETURNS AS HARTLEY RATHAWAY

After the shocking revelation that Zoom is Jay Garrick (Teddy Sears), Barry (Grant Gustin) is more determined than ever to get back to Earth-2 to stop Zoom forever. Desperate to find a way to increase his speed, Barry decides to travel back in time and masquerade as his earlier self in order to get his arch-nemesis, Dr. Harrison Wells/Eobard Thawne (Tom Cavanagh), to teach him how to run faster. However, things don't go as planned and Barry is stunned to face familiar foe Hartley Rathaway (guest star Andy Mientus), as well as old friend Eddie Thawne (guest star Rick Cosnett). Iris (Candice Patton) makes peace with her past in order to embrace her future.

Alice Troughton directed the episode penned by Aaron Helbing and Todd Helbing (#217).