The Secret History' is obviously the one that put her on the map. It’s the book everyone talks about first, and for good reason. That moody, dark academia vibe and the whole Greek tragedy setup in a Vermont college is just iconic. It feels like the blueprint for a certain kind of literary suspense that’s been imitated a lot, but never quite matched. I think its popularity has endured partly because of the mystery but also the way Tartt nails that feeling of being in a closed, intense group where the intellectualism turns sinister.
'The Goldfinch' had a whole different level of fame after winning the Pulitzer. It’s a massive, sprawling thing following Theo Decker from childhood trauma through the art underworld. The sections set in Vegas with Boris are some of my favorite writing from her, bleak and weirdly beautiful. While some argue it’s too long, I think its epic nature is what grabbed so many readers—it’ll take you somewhere you weren't expecting.
'The Little Friend' often gets overshadowed, but it's got its own dedicated fanbase. It’s a slow-burning Southern Gothic mystery focusing on a twelve-year-old girl trying to solve her brother’ Drowning. It’s less overtly dramatic than her others, with a focus on childhood imagination and simmering family tensions, which might be why it’s not as universally popular, but it’s a masterpiece in atmosphere.