Into The Void (Ep# 601) SEASON PREMIERE -- While Barry (Grant Gustin) and Iris (Candice Patton) deal with the heartbreaking loss of their daughter, Nora, the team faces their greatest threat yet -- one that threatens to destroy all of Central City. Meanwhile, Killer Frost (Danielle Panabaker) has a brush with death that results in an unexpected new dynamic that will change her relationship with Caitlin forever. Gregory Smith directed the episode written by Eric Wallace & Kelly Wheeler (#601). Original airdate 10/8/2019.