Promise Not to Tell is a 2007 mystery novel with supernatural elements written by Vermont author Jennifer McMahon. The book was released in April 2007 in the US by Harper Paperbacks (an imprint of HarperCollins). It was released in Germany by Rowohlt Verlag, under the title Das Mädchen Im Wald (The Girl in the Woods), in October 2007. It was released in the United Kingdom by Orion Books in 2008.
