From the Edgarʼ Award winning author of Uneasy Relations. Starring Professor Gideon Oliver; a likable, down-to-earth, cerebral sleuth. (CHICAGO TRIBUNE) Sailing the Amazon with a group of botanists, Skeleton Detective, Gideon Oliver is on his dream vacation. But it turns nightmarish when fierce head-hunters narrowly miss killing the group leader, then a deranged passenger kills a botanist and flees. Long-past enmities and resentments and new ones as well might explain things. And when a fresh skeleton turns up in the river, Gideon is sure that, in this jungle full of predators, humans may be the deadliest of all.