That's exactly what happened with Shadow and Bone by Leigh Bardugo. I really had no clue what it was about. Reading the jacket flap, it didn't exactly get me raring to dive into the book. One chapter in and I didn't want to stop reading. I love that!
Anyway, here's my teaser from Shadow and Bone:
"So I'm the Darkling's prisoner?"
"You're under his protection."
"What's the difference?"
Ivan's expression was unreadable. "Pray you never find out." (page 55)
And now I want to ignore all my house cleaning and just go read.