"The Sinister Sponge." A strange relic turns a diver into a human sponge, putting Earth's water supply in danger of being soaked up. Script by Bill Finger, art by Bob Brown. "The Terrors of Mr. Tic-Tac-Toe." The Challengers are tied to a giant game board. Script by France Herron, art by Brown. Cover by Brown. Cover price $0.12.