M. Scribonius Drusus Libo has always been considered an inexplicable victim of predatory prosecutors, destroyed in the changed conditions of Tiberius’ succession to the founder of the Principate. This is wrong. Drusus Libo conspired with a group of Tiberius’ opponents to challenge Tiberius’ right. The senate’s investigation of Drusus Libo will be examined in Chapter One and Chapter Two.…