She keeps house for Inspector Witherspoon . . . and keeps him on his toes. Everyone's awed by his Scotland Yard successes—but they don't know about his secret weapon. No matter how messy the murder or how dirty the deed, Mrs. Jeffries's polished detection skills are up to the task . . . proving that behind every great man there's a woman—and that a crimesolver's work is never done.
The week before Christmas, Inspector Gerald Witherspoon's staff prepares for the long-awaited wedding of Betsy and Smythe. But when a middle-aged spinster is killed in what looks like a random crime, the Inspector suspects otherwise.

With uncooperative witnesses, sulking relatives, and a second Christmas wedding, a simple investigation seems as unlikely as catching St. Nick at work.