When the high tide reaches Venice, four sirens are sounded to warn the population of the incoming danger. Each one of them represents a growing level of emergency, the level of the rising water. Yet there was no sound after the last siren, nothing to prepare venetians for the level of destruction the 2019 storm brought to town. This is how The Fifth Siren was born. Venice becomes the nexus where many global crises come together - environmental, cultural, social, technological. We aim to alert and explore what is beyond it: the many challenges we have to confront when facing an unknown future. The podcast has been produced by Fill Productions with the support of the Italian Cultural Institute in London and Banor Capital.