This collection features four Agatha Christie novels, including The Listerdale Mystery and The Clocks, all published by Heron Books. The books are in hardcover format and written in English, making them a great addition to any book lover's collection. The author, Agatha Christie, is well-known for her thrilling mystery novels that keep readers on the edge of their seats. The Agatha Christie Collected Works series is a must-have for any fan of the crime genre. Each book is beautifully published by Heron Books and includes some of Christie's most popular novels. Whether you're a seasoned reader of Christie's work or just starting out, this collection is sure to impress.