The Time Axis
by Henry Kuttner
Summoned to the end of time by a being they only knew as the Face of Ea, four adventurers from the twentieth century faced a force that even the superscience of that era could not meet – nekron, negative matter, negative power, eventual destruction for everything it touched. It seemed hopeless to expect them to win this battle for the fate of the universe – but there was a force among them that they could not suspect.