The ruins
Scott Smith
Two American couples vacationing in Cancun, Mexico follow a German tourist in search of his brother, last seen heading toward some ruins with his new girlfriend.

by Jake Page (2002)
Blind wildlife sculptor Mo Bowdre and his Anglo-Hopi girlfriend Connie Barnes investigate the death of a Santa Fe art dealer with ties to Singapore and the theft of some Hopi deities, potent--and dangerous--sacred objects on which the integrity of tribal life greatly depends.
Scott Smith
Two American couples vacationing in Cancun, Mexico follow a German tourist in search of his brother, last seen heading toward some ruins with his new girlfriend.
Patrick O'Brian
"This story begins with a sloop in the South China Sea barely surviving a killer typhoon. The time is the 1930s, and the protagonist is a teenaged American boy whose missionary parents have just died. In the company of his rough seafaring uncle and an elderly English cousin, an eminent archaeologist, Derrick sets off in search of ancient treasures in Central Asia." -- back cover.
Sarah L. Thomson
Sam (a puzzle master) and Martina (a history whiz) become involved in a dangerous quest to find seven keys left behind by Benjamin Franklin and a secret society of descendants, which, when gathered together, unlock a powerful weapon, so the middle schoolers must solve the puzzles, find the artifacts before the bad guy does, and save the nation.
Carolyn Keene
Nancy and George have big plans for the long weekend. They're heading home to River Heights, not only to check on Bess, who's in the hospital recuperating from her accident, but to spend time with Jake and Will.