The Flash - Season 6, Episode 10 , titled serves as the critical aftermath of the Crisis on Infinite Earths crossover. It explores how Team Flash navigates a "new normal" on the newly formed Earth-Prime, where the history they knew has been rewritten. Plot Summary

The episode picks up where the previous one left off, with Barry (Grant Gustin) and Iris (Candice Patton) still reeling from the consequences of their actions in the Time Force. The team is trying to find a way to restore the original timeline, but their efforts are hindered by the emergence of a new villain, Hartley (played by Andrew J. West).

: Driven by a late-night epiphany, Iris sneaks into McCulloch Technologies and finds a massive mirror in Eva's old office. As she investigates, two silver hands reach out from the glass and pull her into the Mirror World . Character Arcs & Changes REVIEW: The Flash – Season 6, Episode 10 "Marathon"

Spoiler Warning: This article discusses major plot points from The Flash Season 6, Episode 10, “Marathon.”