A Good Girl's Guide To Murder By Holly Jackson
You seem like you'd enjoy a book you could curl up with and proverbally chew on for a while, the sort of book that can really get your gears turning. This book pairs very well with a warm drink, a blanket, and maybe even a bit of smooth jazz. The formatting is pretty unique and the pacing is just fast enough that it doesn't drag, which will leave you turning the pages to the point you'd probably read it in one sitting. Personally, I love the way the clues are presented in a mixed media style, and I would highly recommend giving it a read. Additionally, if you like romantic subplots, you'll like this.
Word to the wise though, head to your local library to give the book a read instead of buying it, that way you know if you'll enjoy it enough for a reread!
Happy reading!