In the billionaires’ retreat of Porto Cervo on Sardinia, burglars are causing sleepless nights for some rich families—and soporific ones for others. Police say thieves who are apparently pumping sleeping gas into homes before breaking in robbed at least two homes on the island last week, making off with cash and jewelry worth almost $500,000, the Guardian reports. Victims report waking up feeling weak and dizzy. Similar "gassing gang" burglaries have been reported in France and Spain this summer. (More burglary stories.)