This book, "Die Zeitdetektive: Der Schwur des Samurai" by Fabian Lenk, is part of the Die Zeitdetektive book series. Published by Ravensburger, this book explores the captivating world of the samurai and the mysteries that unfold. The captivating cover art featuring a samurai and a group of children hints at the compelling adventures within. Get ready to be transported to a world of suspense and intrigue, where time itself becomes a crucial element in solving a captivating mystery.