Solomon's Key — Tim Ellis

Women are being murdered and mutilated in Hammersmith, London. The killer is leaving messages in ancient languages pinned to the victims, and Detective Chief Inspector James Harte must recruit a cryptographer from GCHQ to help him. The decrypted messages, however, raise more questions than they answer, and further help is sought from a Priest, and a Biblical scholar. Harte must also overcome enforced anger counselling, and the worst winter in London since the first Ice Age if he is to find the psychopath before the secret of Solomon's Key is unleashed on the world.