"Her conscience was her undoing. Ten years ago, as a live for the moment college student, Melinda Harding had committed an act of folly while vacationing in the Guatemalan Highlands. Now, on her second visit, she intended to right the past wrong. But Chad Young's presence drastically altered Melinda's plans. Danger followed the enigmatic travel agent at every turn, and Melinda soon found herself embroiled in a treacherous scheme of murder and betrayal that involved ancient Mayan treasure. Worse yet, she couldn't even trust the man she had come to love. Chad had lied to her repeatedly- what more was he capable of?" This is from the back cover of the book.
Used availability for Fran Earley's Ransom in Jade
June 1987 : UK Paperback