: Includes guest stars Michelle Harrison, John Wesley Shipp, and Teddy Sears.
: Reviewers noted the episode was "fleet-footed," playing fast and loose with time travel rules to keep the action moving toward the upcoming "Elseworlds" crossover. Episode Statistics Viewership : Approximately 1.78 million live viewers. Rating : Average critic rating of 8.31/10 . [S5E8] What's Past is Prologue
is the 100th episode of The Flash , originally airing on December 4, 2018. It serves as a commemorative milestone that balances a trip down memory lane with the urgent need to defeat the season’s "Big Bad," Cicada. Critical Consensus : Includes guest stars Michelle Harrison, John Wesley
: Critics from Culturefly and IGN highlighted Tom Cavanagh’s performance as Eobard Thawne, particularly in the tense scenes with Nora, as a major standout. Rating : Average critic rating of 8
: The plot follows Barry and Nora as they travel back in time to retrieve items needed to stop Cicada. This allows for the return of iconic villains like Savitar, Zoom, and Eobard Thawne.