Witch Breed — Alan Gibbons

When Paul journies back to 17th-century London, he expects to be thrown into a life or death struggle for the three gates that imprison the ancient King Lud. But the battle doesn't come. Instead, Paul roams alone, learning how to survive in a city where all the talk is of the savage civil war that rages beyond its ramparts. Somewhere underground, Lud is waiting in his crypt, preparing to rise again. War, fear and want are his tools. But Paul has his own weapons. Beyond the city, a witchhunt rages out of control. Only one woman possesses the power to help Paul in his quest.