Asterix and son

Who can have dumped a baby boy in a basket outside Asterix's hut? Child-care is something new to Asterix and Obelix, not to mention Crismus Cactus, Prefect of Gaul, masquerading as a Gaulish nursemaid. Why are the Romans after the baby - and just what plot is the treacherous Brutus hatching against Julius Caesar? Find out the answers inside.