The fourth book in the award-winning Blue Satan Mystery series begins in the winter of 1715 when the River Thames freezes over and a Frost Fair is erected on the ice. A frozen corpse, leaning against a booth and dressed in expensive coronation robes, turns out to be Sir Walter Tatham, a recent visitor to Hawkhurst House. Lord Harrowby Hawkhurst asks Hester Kean to discover what she can about the baronets head, the two must use all their wiles to corner a clever murderer.