The Hollow sisters are infamous for disappearing for 31 days when they were children. There’s a big mystery surrounding their disappearance and Iris and Vivi don’t remember anything that happened to them or their whereabouts when they were gone but Grey seems to know more than she lets on. Ten years later and Grey is missing again, so Vivi and Iris go on a search for her. Along the way, they’re joined by Tyler, Grey’s boyfriend. Grey is a famous fashion designer and Tyler is a famous model. Vivi is a traveling musician and Iris is a seventeen year old in high school. During the search, Vivi and Iris make gruesome discoveries and a terrifying man wearing a bull skull chases them, trying to kill them. Once Tyler joins them, his life becomes endangered too. The mystery surrounding the sisters and their disappearance kept me interested and the more I read, the more I wanted to know. Tyler adds flair and humor and Vivi adds wild behavior while Grey adds darkness. I enjoyed every page of this supernatural fantasy, 5 stars!