Overnight ratings report for the Flash episode "Flash Back"
Preview clip and "Inside Flash Back" video for tonight's episode of The Flash
Official promotional photos for the Flash episode titled "Flash Back"
Screen captures from the extended promo trailer for the Flash episode "Flash Back"
Promotional trailer for the Flash episode "Flash Back"
Official CW description for the Flash episode titled "Flash Back"
Andy Mientus will be returning as the Pied Piper in the Flash episode "Flash Back."