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 baronet’s affairs, but will give no reason for the request—all Hester knows is that the mention of Sir Walter is enough to drive Harrowby into a panic. She enlists the help of her friend, the outlawed Viscount St. Mars, alias Blue Satan, who has a mission all his own, having been asked to help a Jacobite rebel escape Newgate prison. With the greatest frost of a century making the very streets of London treacherous, plus a price on Blue Satan’s head, the two must use all their wiles to corner a clever murderer.