Sign of Four

When a beautiful young woman is sent a letter inviting her to a sinister assignation, she immediately seeks the advice of the consulting detective Sherlock Holmes. For this is not the first mysterious item Mary Marston has received in the post. Every year for the last six years an anonymous benefactor has sent her a large lustrous pearl.

Cand o tanara frumoasa i se trimite o scrisoare prin care o invita la o misiune sinistra, ea cere imediat sfatul detectivului consultant Sherlock Holmes. Pentru ca acesta nu este primul articol misterios pe care Mary Marston l-a primit in postare.