When I was in middle school I found my mom’s 1984 edition of Nineteen Eighty-Four. The back cover had some phrase like “engrossing from the first sentence to the last 4 words.”
If the cover had just said “engrossing from beginning to end” it wouldn’t have tempted me, but specifically saying “4 words” made it irresistible!
I think I made it through half of the book before I broke down and skipped to the end. It’s undoubtedly a spoiler, but certainly not an unexpected twist.
I still finished the book and was indeed engrossed by the concepts for a few years.