Each year the residents of Nether Haddon celebrate the village's founding in the time-honored way with games, music, and performances by their sword dancers. But something new is added to the fancy footwork this year: a team member dies ... murdered.

Fear, jealousy and suspicion quickly engulf the group, emotions as tightly interlocked as the five swords used in the dance: a series of turns, jumps and clogging steps intricate as Celtic knots. Was the victim the intended target, or should it have been someone else?

In the course of the CID investigation, a mysterious 17th century puzzle is discovered. Does it hold a clue to the murder?

Detective Brenna Taylor and her colleagues have more than enough to worry about. But unbeknownst to her, career criminal King Roper has escaped from prison where he was serving time for murder. Now free and eager to settle the score for his capture, Roper tracks down Brenna's whereabouts, ready for revenge...