Butterfly Sister by Amy Gail Hansen was entertaining. I read it in a day, so I guess it kept my attention, but I do not consider it a great book. The story is too far-fetched. A woman leaves college just before graduating due to a traumatic experience. Then a strange incident takes place regarding a lost suitcase, and the mystery deepens from there. She returns to college, learns about traumas that happened to many of her friends and acquaintances. Everything kind of ties together in way too many strange and coincidental ways. I would have liked it to be more believable and less exaggerated. I can only give this book 3 lukewarm stars.