When your impromptu bookmark is kind of relevant. Spooooooky.
The first 75% was just perfect for summer reading but after that it went to pieces. The Big Twists are pretty easy to predict and then they spend what feels like a million pages slowly over explaining what you already know. About 25 pages from the end I just quit. Also, I‘ve had a baby. No way two women give birth at home, unassisted, and then one of them runs around for hours and no one is like, hey, you sure are bleeding like A LOT.