I remember speaking to a Baron a few years back whilst en-route Islay to Blackpool. The aircraft lost one engine ( without telling me!!) and whilst trying to do a restart the other one stopped whilst over the Lakes......eventually one was restarted very low over lake Windermere in not very nice weather!!! and the aircraft crawled back to Carlisle......I seem to remember at the time this was a fuel miss management problem, there was still fuel onboard but the transfer valves had been operated incorrectly !!!!