瑪莉‧摩斯坦小姐有一則奇特的故事要告訴我們。從她父親失蹤開始之後的六年內，每年她都會在同一天收到一顆寄給她的大珍珠。是誰把這些珍珠寄給她呢？父親遺留的一張紙上寫著「四的標誌」，這又是怎麼一回事？只有神探福爾摩斯能夠解開真相。
Miss Mary Morstan has a strange story to tell.Since her father disappeared, she has received a large pearl through the post on the same day, every year, for six years. Who is sending them? And what about her father's paper with the words 'The Sign of Four' written on it?Sherlock Holmes alone can solve these mysteries.
為了保護您的權益，「三民網路書店」提供會員七日商品鑑賞期(收到商品為起始日)。
若要辦理退貨，請在商品鑑賞期內寄回，且商品必須是全新狀態與完整包裝(商品、附件、發票、隨貨贈品等)否則恕不接受退貨。
