An unknown thief steals an important naval treaty from the office of Mr. Percy Phelps, a Foreign Office clerk. Phelps's distress gives him a brain fever that lasts for nine weeks. As he begins to recover, he writes to his old schoolmate, Dr. Watson, begging him to invite Sherlock Holmes to investigate the matter and find the treaty. Otherwise, his honor and happiness are gone forever. Holmes takes up the case with zest, but gives Phelps no false hopes. The mystery is as dark and tangled as any he has known. 可能你会想看:福尔摩斯:跳舞的人[电影解说]福尔摩斯:驼背人[电影解说]福尔摩斯:海军协定[电影解说]福尔摩师奶国语福尔摩斯小姐:失踪的侯爵福尔摩斯:基本演绎法第一季福尔摩斯二世福尔摩斯与中国女侠[电影解说]福尔摩斯先生 Mr. Holmes[电影解说]福尔摩斯:基本演绎法第七季