The astonishing new discovery that could change everything... Lying inside a high-security vault, deep within the heart of one of the world s leading natural history museums, is the scientific find of a lifetime - a perfectly fossilized early primate, older than the previously most famous primate fossil, Lucy, by an astonishing forty-four million years. A secret until now, the fossil - Ida - is the most complete early primate fossil ever found. Forty-seven million years old, Ida rewrites what we ve assumed about the earliest primate origins. Her completeness is unparalleled. With exclusive access to the first scientists to study her, the award-winning science writer Colin Tudge tells the history of Ida and her place in the world. The Link offers a wide-ranging investigation into Ida and our earliest origins - and the magnificent, cutting-edge scientific detective story that followed her discovery. At the same time it opens a stunningly evocative window into our past and changes what we know about primate evolution and, ultimately, our own.