Lycaste is a lovesick recluse living in a forgotten Mediterranean cove who is renowned throughout the distorted people of the Old World for his beauty. Sotiris Gianakos is a 12,000-year-old Cypriote grieving the loss of his sister, a principled man who will change Lycaste's life forever. Their stories, and others, become darkly entwined when Aaron the Longlife—the Usurper, a man who is not quite a man—makes a claim to the Amaranthine throne that threatens to throw the delicate political balance of the known galaxy into ruin.

The Promise of the Child is a stunning feat of imagination set against an epic backdrop ranging from 14th-century Prague, to a lonely cove near the Mediterranean Sea, to the 147th-century Amaranthine Firmament. Toner has crafted an intelligent space opera filled with gripping action and an emotional scale that is wonderfully intimate, a smart and compelling debut that calls to mind the best of Kim Stanley Robinson or M. John Harrison.