Pact of the Fathers — Ramsey Campbell

Daniella Logan, daughter of a film impresario, is stunned to see a group of robed men performing a ritual above the newly-turned earth of her father's grave. Daniella's father and his friends--politicians, newspaper magnates, highly-paid actors, top-flight surgeons, high-ranking police officials, and many more--are bound by an unholy blood pact that calls for the sacrifice of their first born children. Now, the more she learns, the more Daniella makes herself a target. But she must not be silenced, for she is not the only firstborn in danger, only the oldest.