P. J., The Secret Service Boy is a novel written by Frederick Hamilton and published in 1922. The book follows the adventures of a young boy named Philip John Davenant, who becomes involved with the British Secret Service during his summer holidays in 1914 and 1915. As the story unfolds, Philip finds himself caught up in a web of intrigue and danger as he helps the Secret Service foil a German plot to sabotage British shipping. Along the way, he encounters...