Dr Edward Kitchener, a brilliant researcher into quantum cosmology for the Event Horizon conglomerate . . . but no good to anybody now, lying dead with his lungs spread out on either side of his open chest. The security system at Launde Abbey was premier-grade, yet a mercenary could still have got through, and plenty of people anxious to stop Kitchener’s work would pay the killer’s fee. But why would a professional waste time in ritually slaughtering the target? Event Horizon needs to know fast, so Greg Mandel, psi-boosted ex-private eye, is enticed out of retirement to launch himself on a convoluted trail involving confrontation with a past which – according to Kitchener’s theories – might never have happened.