One of the most famous events in the Venetian calendar is Carnevale. This ancient tradition, meaning 'meat is allowed', celebrates all things decadent in the run-up to Lent. Kicking off celebrations is a 400-metre descent from St Mark's Campanile by a young Venetian girl. There's a tourist who's had a suspected drug overdose, a beauty pageant, undercover police hot on the tail of thieves and a dead body found near St Mark's Square. In a season where anything goes, the emergency teams have their work cut out reining the city in