Arrowverse Wiki
Arrowverse Wiki

"Hear No Evil" is the second episode of the ninth season of The Flash, and the one-hundred-seventy-third episode overall. It aired on February 15, 2023.



This section is a stub. You can help expand this section by adding some information.



Special guest star[]

Guest starring[]




  • This is the first episode of The Flash where during the end credits, the final scene of an episode is being played.
    • In the bonus scene, Iris tells the crowd that Barry is the Flash, before he quickly plays it off as a joke. Similar events occurred in "Girls Night Out", where a drunk Barry exclaimed that he was the Flash.
  • It's revealed Hartley has been running a night club with his old crew ever since Roderick was cured; meaning his crimes were all to fund research to save him.
  • There's not enough of Frost's psyche left to allow her and Caitlin's personalities to exist at the same time; Khione is the result of this attempt backfiring.
  • Despite the fact the majority of Team Flash wanted Caitlin back, they're now stuck with Khione as Pied Piper destroyed the machine that would have turned Khione back into her; it's not helpful that she doesn't have either Caitlin or Frost's memories, essentially being a child in a woman's body.
    • This handicaps Team Flash as they now are lacking a doctor on staff.
  • Izzy Bowen is reveled to be alive on Earth Prime although she’s not seen.
  • Non-speedsters suffer catatonia when forced to vibrate at high frequencies.
  • Andrea Wozzeck's Sonic Scream is recycled audio of the Sonic Scream used by Black Siren/Black Canary


  • Barry doesnt try putting Hartley in a pipeline cell to stabilize him; like when he got stuck phasing uncontrollably after touching Silver Ghost's meta tech.
  • When Barry and Iris decide to let Khione make her own choice, Iris refers to Thomas' files on "Frost and Snow." She should have said "Frost and Caitlin," since Khione was temporarily going by Snow, and Thomas would not have had any files on her.