The Star Trek: The Original Series: The Eugenics Wars #1: The Rise and Fall of Khan Noonien Singh

In the twentieth century, an international cabal of scientists launches the Chrysalis Project, the development of an artificially enhanced breed of humans, while Gary Seven, an undercover operative for an advanced alient species struggles to neutralize the threat while watching the children of Chrysalis, including the brilliant Khan Noonien Singh, grow to adulthood. Reprint.