Despite a misleadingly slow and uninspiring beginning, this supernatural thriller is enjoyable: a combination of Charles William's books War in Heaven and The Greater Trumps, but moved to a small town in Northern California. Here the Holy Grail is actually an origami cup which, folded to form different shapes, provides the owner with diverse powers. A quiet group of ordinary people have been helping Michael Graham, its guardian, to protect it. When Graham is about to die of old age, the Grail summons Howard Barton to visit his relatives and take over its guardianship.