Crisis on Infinite Earths: Pt. Four

S8 E8: 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, who reveals that he has become something else. Meanwhile, the origin stories for The Monitor and Anti-Monitor are revealed.