- Previous episode S05E08 - The Wrath of Rama Khan
- Number S05E09
- Director Jesse Warn
- Writers Derek Simon, Marc Guggenheim, Robert L. Rovner
Crisis on Infinite Earths - Part One
The Monitor sends Harbinger to gather the worlds’ greatest heroes—Supergirl, The Flash, Green Arrow, Batwoman, White Canary, The Atom and Superman—in preparation for the impending Crisis. With their worlds in imminent danger, the superheroes suit up for battle. J’onn and Alex recruit Lena to help them find a way to save the people of Earth-38.