Professor Edward Kitchener, a double Nobel laureate researching quantum cosmology for the powerful Event Horizon conglomerate has been savagely murdered. But was he the victim of industrial espionage, personal revenge, or a crime of passion by one of his handpicked team of live-wire students? Event Horizon needs to know and fast, so Greg Mandel, PSI-boosted veteran of the infamous Mindstar Battalion, must embark on an urgent investigation that ultimately leads him to an astounding confrontation with a past, which, according to the dead man's theories, might never have happened.