"conspiracy to overthrow the emperor Nero in AD 65" . "Pisonian Conspiracy" . . "conspirators" . "Pisonian conspiracy" . . "Piso's plot" . . . "Pisonian conspirators" . . "the conspiracy" . . . . "his conspiracy against Nero" . . "conspiracy" . . "conspiracy against the emperor" . "conspiracy of Piso" . "conspiracy against Nero" . "conspiracy and attempted assassination" . . . . "Pisonian conspiracy" . "organized a coup" . "Gaius Calpurnius Piso's conspiracy" .