Books that are challenging but still very readable and compelling, something that engages you but could still read before bed

Looking for books that are deep and interesting but not hard to read. I'm thinking stuff like Perfume by Patrick Suskind, Rebecca by Daphne du Maurier, When Breath Becomes Air by Paul Kalanthi, The Secret History by Donna Tartt, Mystic River by Denis Lehane. I really enjoyed all these books and I think about them [...]