They Both Die at the End is a young adult fiction book by Adam Silvera. It is the first book in the They Both Die at the End series and was published by HarperCollins in 2018. The book is a trade paperback with 416 pages and measures 8 inches in length, 5.3 inches in width, and 0.9 inches in height. The book's topic includes love and romance, social themes such as death and dying, family, action and adventure, general topics, LGBTQ, and friendship.