Dan Hawk, an ex-detective turned writer, is re-instated onto the force after returning to his home town. A serial killer has 'donned the guise'

讲述了亚瑟王在结束与罗马帝国的战争回国后，发现王位被自己的侄子偷走的故事。为了夺回王位，他向巫师梅林和圣杯骑士团寻求帮助。