The Gallows Curse

Set in the reign of King John, when the whole of England was under sentence of excommunication (among other issues, King John wouldn't accept the Pope's choice of Archbishop). Can you imagine the chaos - all the churches closed, King John in retaliation arresting every priest who hadn't fled and the people terrified of dying in sin without the last rites? No burials were permitted on consecrated land, no marriages were conducted, no babies baptized. But I don't want to reveal much more, except to say the plot involves people-trafficking, murder and, oh yes... a very feisty dwarf and a eunuch with a hunger for revenge.