"X Y Z: A Detective Story" is an exciting detective novel by the famous writer Anna Katharine Green. The main character, private detective X Y Z, is known for his unparalleled investigations and insightful mind. In this book, he faces a difficult case that seems unsolvable even for the best minds. A crime that has gathered a veil of mystery around itself creates tension and interest in the reader. Will X Y Z be able to unravel this tangled maze of events and find the answers to all the questions? This book is a fascinating story of intrigue, mystery and mystery, which is sure to fascinate every detective lover."