Dark Inheritance [signed] [first edition]

After being asked to raise Umber, a bonobo chimpanzee, in his home as part of an experiment to discover the differences in learning patterns between humans and chimps, Dr. Jim Dutton, an anthropology professor, begins to suspect that his primate pupil has been genetically altered and joins forces with Canadian journalist Valerie Radin to uncover the truth. 75,000 first printing.