Knot What You Think is a cozy craft mystery book written by Mary Marks. The protagonist, Martha Rose, is a quilter who finds herself in the midst of a murder investigation. When a fellow quilter is found dead at a quilting retreat, Martha becomes determined to solve the case. With her quilting expertise and sharp wit, Martha uncovers a series of clues that lead her closer to the truth. Along the way, she also forms unexpected friendships and discovers the power of community. This book offers a delightful mix of mystery, quilting tips, and heartwarming moments that will leave readers wanting more.