"Other Sister" by Sarah Zettel is a psychological fiction novel published by Grand Central Publishing in 2018. The hardcover book measures 9.4 inches in length, 6.4 inches in width, and 1.2 inches in height, with a weight of 21 ounces. It contains 384 pages and is written in English, catering to a contemporary women's genre audience. Sarah Zettel's novel delves into the complex psychological dynamics between sisters, making it a compelling read for those interested in exploring themes of familial relationships and personal growth.