After three doctors fell in love with a fresco by Fra Angelico, they pledged to restore it so it could get its due when a blockbuster exhibition opens this fall. Detail of the 600-year-old Fra ...

When Steven Woloshin, an American doctor, first saw the 600-year-old fresco of the Crucifixion by Renaissance master Fra Angelico inside a cloistered convent in January last year, he was blown away.