Buried ceremoniously, high in a cave on the Rock of Gibraltar, lies the skeleton of a human woman, clutching the skeleton of a part-human, part-Neanderthal child. Fascinated, Professor Oliver jumps at the chance to visit the site. But two deaths, possibly murders, have rocked Gibraltar. As Oliver tries to piece things together, he�'s about to fall for some deadly tricks. After all, unlike the Gibraltar Boy, he�'s only human.