The final episode of season 2 of Big Little Lies, airing on July 21, has a lot of questions left to answer. But the biggest one viewers expect the hit HBO show to address is this: Will the titular “big little lie” blow up the lives of Madeline (Reese Witherspoon), Celeste (Nicole Kidman), Bonnie (Zoe Kravitz), Jane (Shailene Woodley) and Renata (Laura Dern)?