Messalina's public wedding while Claudius travelled
In AD 48, while Claudius was away at Ostia, his wife Messalina staged a formal wedding with the consul-designate Gaius Silius in Rome, in effect a coup that assumed the emperor would stay oblivious. The freedman Narcissus broke the news, kept the shaken Claudius away from her pleas, and issued the order for her execution in his name. Claudius's years of trusting affection had made him the last person in Rome to see a betrayal everyone else could see.