i went into this book not knowing what to expect. i'd seen the movie trailers, not that they gave away much information, but apart from that i went in blind. i'd somehow managed to avoid the spoilers wandering around the internet, resisted clicking on the video reviews posted by the many booktubers i'm subscribed to. i'm so glad i managed that. 
 this book blew my mind. i'm not an incredibly fast reader, so it took me a good few days to get through it, but don't let that fool you. the end of every chapter had me yearning for the next. it was SO gripping. i loved the slow build-up, the way you were gradually let further and further into the characters heads, especially amy's. 
 what knocked a star off for me was the ending. it wasn't that i didn't like the ending, because i did. it's not often a book can surprise me, but this one definitely managed. it's just that it was left a little too open... i like the thought of leaving readers to invent their own conclusion, but there were so many loose threads and unanswered questions that i wanted solved and it just didn't happen. aside from that, it was wonderful. definitely going to look into gillian flynn's other books.