Nick Christmas and his young Girl Friday, Randi Degrotti, try to track down the famousGolden Diamond of Kolimar that wasapparently stolen from the estate of Wadeand Adeline Huntington, only to discovertwo other interests vying for its retrieval: anarcheology couple with two avid graduatestudent assistants versus two physicists andmysterious cohorts from an energy researchcompany called GEOS. Locating the diamondin the least likely place, the detective and hislady sidekick allow the archaeologist toexamine its suspected mystical properties in asurprising climax that pits them againstshadowy henchmen who want it for itsearthlier powers.