"Before I Go to Sleep" by S.J. Watson is a psychological thriller novel published by HarperCollins in 2012. The trade paperback format measures 8 inches in length, 5.3 inches in width, and 0.8 inches in height, with a weight of 9.9 ounces. The novel spans 368 pages and is written in English, catering to fans of the genre who enjoy suspenseful and literary stories. With its intriguing plot and compelling narrative, this novel is sure to keep readers on the edge of their seats and engaged in the story until the very end.