Myth has it that the sorceress Caillech lives in the cabochons of her jewels and takes revenge on anyone who wears what is hers—the reason the owner hired jewelry designer Flanna McKenna to make copies. Even so, the woman was murdered and the jewels disappeared. Michael Eagan is hired to catch a thief—possibly Flanna herself if her late client's son is believed. Flanna agrees to Michael's idea of a mock marriage as they set out to seek a Traveler who may be the real thief. What starts as an arrangement soon turns into something hotter, but Flanna knows finding the jewels before Beltane is critical, for if any woman wears the jewels on that magic night, Caillech will free herself and return to corporeal form with the power of the sorceress...