It's been a really, really long time since I was consistently surprised by a book. Flynn manages to keep you on your toes throughout the whole novel, a feat that requires even more skill because the whole book is narrated in first person. You're inside the characters' heads, but you're still unsure, still feel a little off-balance. The way she toys with perspective shifts is absolutely fascinating, too. 
 I was in such a reading funk when I started this book. Nothing could keep my attention, I was picking up and discarding three books a day, unable to find anything that clicked. But Gone Girl hooked me immediately, and kept me hooked, kept drawing me to it to read more. 
 I don't want to spoil anything -- this is one that you just need to read for yourself. I will definitely be keeping an eye out for more works by Flynn.