Knot What You Think is the fifth book in the Quilting Mystery series by Mary Marks. In this cozy mystery, protagonist Martha Rose is a quilter and member of the Quilty Pleasures quilting group. When a fellow quilter is found dead, Martha and her friends must unravel the clues hidden in the quilts to catch the killer. With its intricate quilting details, engaging characters, and a dash of humor, this book is a delightful addition to the Cozy Craft Mystery genre.