Kirsten is a Vancouver, B.C., jewelry designer and devoted spelunker. Butneither vocation nor avocation has provided a respite from her worry overthe disappearance of her globetrotting sister, Emma, the black sheep of thefamily. The possibility of coincidence is too remote when Kirsten, on acaving expedition, finds a piece of jewelry she made for Emma. Someone amongher circle of caving friends may be responsible for Emma's probable death.**