Take a look at new footage, plus images from "The Flash" episode "What's Past is Prologue", directed by series co-star Tom Cavanagh, airing December 4, 2018 on The CW:
"...in this 100th episode, 'Barry' (Grant Gustin) and 'Team Flash' come up with a plan to stop 'Cicada' (Chris Klein). However, the plan calls for Barry and 'Nora' (Jessica Parker Kennedy) to travel back in time to gather some key necessities. Then Barry hesitates, concerned about his daughter seeing certain parts of his life.
"Meanwhile, 'Sherloque' (Cavanagh) takes his concerns about Nora to 'Iris' (Candice Patton) while 'Caitlin' (Danielle Panabaker) turns up a key asset in the fight against Cicada..."
Click the images to enlarge and Sneak Peek "The Flash: What's Past is Prologue"...