Off the coast of an Italian island, an enormous cruise ship - seventeen floors high, three soccer pitches long - is tilting noticeably to one side. The local mayor is horrified: there are thousands of people on board the Costa Concordia, and it's only a matter of time before the ship capsizes altogether. How did a routine trip go so terribly wrong? And why is the captain nowhere to be found? For a full list of sources, see the show notes at timharford.com.See omnystudio.com/listener for privacy information.