What to read next if you loved ‘The Goldfinch,’ ‘Fifty Shades of Grey’ and more bestsellers

“What should I read next?” That’s the question that we, as book critics, get asked most frequently — and that we’re always happy to answer. (In fact, you might not be able to shut us up.) But before making a recommendation, it helps to know what else the reader in question has enjoyed. Here are some fail-safe pairings.