Complex sentence: A second attempt leads William to break into the grounds of The Hall in order to steal flowers where he bumps into Rosemary Verney who is about to be interviewed against her will for a society magazine.
Split into simpler sentences: A second attempt leads William to break into the grounds of The Hall in order to steal flowers. Here he bumps into Rosemary Verney who is about to be interviewed, against her will, for a society magazine.