The latest The Flash episode photos show that XS returns to help out her family once again.

The Flash episode 815, "Into the Still Force" shows that the police need an assist from Chester.

The Flash (Grant Gustin) gets an assist from XS (guest star Jessica Parker Kennedy). Meanwhile, CCPD enlists Chester (Brandon McKnight) for help when a mysterious device is found at a crime scene.

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The Flash episode 815 airs on May 18, 2022.

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