Vintage Goosebumps The Horror at Camp Jellyjam is a horror novel for children written by R.L. Stine. The book is part of the Goosebumps series and was published by Scholastic, Incorporated in 1995. It is a trade paperback with 160 pages, measuring 7.6 inches in length, 5.3 inches in width, and 0.4 inches in height. The book weighs 4.8 ounces. The story takes place at a summer camp and features horror and suspense themes.