Complex sentence: That evening while Sydney, Kelly, and Lady DeBorah have dinner in London, Spence sits at a nearby table until he successfully apologizes to Sydney; a German air raid then spoils the rest of their evening.
Split into simpler sentences: That evening while Sydney, Kelly, and Lady DeBorah have dinner in London, Spence sits at a nearby table until he successfully apologizes to Sydney. A German air raid then spoils the rest of their evening.