Every currency crisis of recent years has been accompanied by a migration of billions of short-term money. Both experts and laymen have again and again been amazed at the speed at which, at relatively short notice, these enormous sums could be mobilised.

We assemble a novel dataset on transitions in central bank leadership in several countries, and study how monetary policy is conducted around those events. We find that policy is tighter both at the last meetings of departing governors and first meetings of incoming leaders. This finding cannot...