Every Vow You Break is a hybrid of contemporary romance, family drama and psychological thriller. It's not your typical thriller and if your looking for a fast paced whodunit then this probably isn't the book for you. I felt that the authors descriptions of the vile house and the dirty climate of Trout Island, NY state were really well executed, I could actually sense the grime and the mustiness of the place and I longed for the characters to give their environment a good scrubbing. But overall I found the characters, especially the protagonist Lara, so frustrating! Lara repeatedly 'sees' and experiences things that are strange and unsettling yet she continues to dismiss them as her eyes playing tricks on her, or her hormones or her excessive wine consumption etc etc. I found this very annoying; basically it was a weak plot device that was used to ensure that the 'strange' incidents weren't revealed until the end. As the book is written mostly from the pov of Lara we are left guessing as to what is going on but only beause she seems completely dense and unrealistically dismissive of the unsettling incidents; thus her character lacked any authenticity and I didn't really care about what happened to her. Having said that the descriptions were very good and the sick relationship between the twins was weirdly fascinating, and is probably the reason I saw the book through to the end. With a bit more effort and some increased character development this book could have been great but as it stands its just average-to-good at best.