Following the previous week's cliffhanger, the episode introduces a new personality, , who emerged after Caitlin Snow’s attempt to resurrect Frost failed.

Joe West expresses his desire to leave Central City due to his fear of losing Cecile to the increasing dangers of their hero work. Production and Cast Details "The Flash" Hear No Evil (TV Episode 2023) - IMDb

Team Flash discovers that a procedure could potentially bring back either Caitlin or Frost, but it would result in the "death" of Khione. While Mark Blaine (Chillblaine) is desperate to sacrifice Khione to get Frost back, Barry and Iris ultimately decide that Khione deserves the right to choose her own life.

A new Captain Boomerang and the Fiddler (Andrea Wozzeck) attack Hartley Rathaway (Pied Piper) to steal his sonic gauntlets. It is revealed that these gauntlets are needed by Red Death to stabilize their physical form.

the second episode of The Flash 's ninth and final season, serves as a pivotal character-driven story that addresses the fallout of Caitlin Snow’s experiments and introduces the primary antagonist of the season’s first graphic novel arc. Plot Summary