"An invasion from space in the year 400 A.D. will wipe out all life... That terrifying message is received by the Kriths, strange creatures from an alternative Earth. And so the Timeliners are formed: fierce commandos that skudd through alternative worlds, battling the present in hopes of changing the future. But how honorable, really are the Kriths' motives? This question and others gnawed at Eric Mathers each time he killed for the Kriths. Such disloyalty bought him a death sentence from his former masters. Now Eric is hiding in a parallel line, waging the war he is so used to. But his time he kills for semifeudal powers invading the North American continent. His enemies are men...and sometimes not. If the answers are here. Eric will find them--or die trying."--Page 4 of cover.