Complex sentence: The novel closes with the men confessing that they had loved the girls, who hadn't heard them calling, and that despite their lifelong efforts, will never know the true motives behind the Lisbon sisters' actions.
Split into simpler sentences: The novel closes with the men confessing that they had loved the girls, who hadn't heard them calling. And despite their lifelong efforts, will never know the true motives behind the Lisbon sisters' actions.