Germanicus (a.k.a. Germanicus Iulius Caesar) was regarded by many Romans as a hero in the mold of Alexander the Great. His untimely death, in suspicious circumstances, ended the possibility of a return to a more open republic and ambitions for the outright conquest of Germania Magna (Germany). This, the first modern biography of Germanicus, is in parts a growing-up story, a history of war, a tale of political intrigue and a murder mystery. It is a...