The Horizontal Man: Finnegan Zwake #1

I DON'T KNOW WHY I FELT SICK. I MEAN, YES, IT WAS THE FIRST DEAD BODY I EVER SAW. BUT I SHOULD HAVE BEEN MORE COMFORTABLE. AFTER ALL, MY WHOLE FAMILY LIKES DEAD THINGS....
Thirteen-year-old Finnegan Zwake is staying with his Uncle Stoppard, a bestselling mystery writer, and still hoping his parents will return from an archaeological expedition in Iceland. They disappeared there several years ago.
Life with his uncle is fairly normal -- until the day Finn discovers a body in the basement. A dead body. It's in the storage area where Finn's parents left behind gold treasure from their last expedition. And missing from the storage space is a magnificent Mayan gold figure, the Horizontal Man....