It's official: Amma Crellin (Eliza Scanlen) is the Sharp Objects killer. While the miniseries suggested the true murderer was her mother Adora Preaker-Crelling (Patricia Clarkson) for a little while in finale “Milk,” the series swerved in the last few seconds with a massive twist.

Who was the real killer in Sharp Objects?

Just when you thought you had it all figured out—Adora is the killer! —the last 10 seconds of the finale threw a huge curveball and revealed that Amma was actually the one who had killed Natalie Keene and Ann Nash. To be clear, Adora did kill her daughter Marian by slowly poisoning her decades ago.

Did Adora know Amma was the killer?

This is actually left much more unclear in the book, but there are several moments in the show that indicate Adora did know (or at least suspected) that Amma was the killer.