The official synopsis for Crisis on Infinite Earths Part 4, which debuts on January 14th 2020 has been revealed….
“Stuck in the Vanishing Point, the Paragons search for a way to escape. The futility of the situation is compounded by The Flash’s (guest star Grant Gustin) disappearance. However, hope appears in the form of Oliver (Stephen Amell), who reveals that he has become something else. Meanwhile, the origin stories for The Monitor (guest star LaMonica Garrett) and Anti-Monitor are revealed.”