"The Secret of Markenmoren" is an exciting detective novel by the famous English writer JS Fletcher. This book reveals the mysterious events that take place in the picturesque village of Markenmoren. The main character, detective Julian Train, decides to reveal the mystery of the disappearance of important documents that may threaten even the London government. Readers, along with Train, are immersed in intrigue, suspicion, and danger, where every step leads to the unraveling of a tangle of mysterious circumstances. "The Secret of Markenmoren" is an exciting thriller that keeps you in suspense until the very end.