"Rick Hayden and Laura Fanning of Panacea return, looking for the missing link. Rick's brother, Keith, a prominent zoologist at NYU, liquidated his assets, purged his research, and vanished, leaving no trace. Except for his resemblance to a man suspected of a homicide involving a nerve agent. The only clue is the mysterious death of an odd blue-eyed primate Keith brought back from East Africa. Rick and Laura's search takes them to an uncharted island...