The book "The Wrong Letter" by the author Walter Sidney Masterman is a fascinating detective story that tells the story of a mysterious mailing of unknown letters. The main character finds himself in the center of events when he receives one such message. What prompted the stranger to send him this letter, and what secret does it carry? The reader, together with the main character, tries to solve the mystery step by step, unfolding threads of intrigue and finding unexpected connections. Will the main character be able to solve this mystery and reveal the true essence of the interweaving of events? "The Wrong Letter" is a book that will interest every detective and adventure lover, where every aspect of the story is permeated with tension and unpredictability.