A German bomb devastated Bridgewater House, home of the Earls of Ellesmere and their magnificent art collection, on May 11, 1941. Torn in 200 places by shrapnel and thought to be ruined, a monumental French painting was rolled up for decades-long storage at the owner's country house. But experts recently tracked down and dusted off Paul Delaroche’s masterful "Charles I Insulted by Cromwell’s Soldiers" for a major show at London's National Gallery in February.