The epic conclusion of "Planetfall." Worlds collide—literally—as living planets Ego and Alter-Ego tear into each other...with Earth as collateral damage! Can the god of thunder halt the global-scale mayhem before all three planets are atomized—or is one world destined for destruction? Plus: The Stranger! The Collector! Zephyr! Black holes and dream realities! This one's got it all.
"The Flash" Casts the Voice of Zoom for Season 2