This is a first edition, fourth printing of "Sleepwalker" by R.L. Stine. The book is a mass market paperback format, published in 1991 by Simon Pulse. It is a work of juvenile fiction, with elements of horror, mysteries, and detective stories. The book is in English, weighs 0.5lbs, and was printed in the United States. It is intended for young adult readers and has a general audience. The book is not a textbook and is in good condition.