Znak chetyrekh - Konan Doil Artur

Sherlock Holmes seeks the help of a young girl Mary Morsten, who tells them about strange, mysterious events taking place in her life. Trying to help the girl, Sherlock Holmes and Dr. Watson find the son of the only friend of his father Mary Morsten, killed in an incomprehensible, surprising way ...
"Be at the third column on the left side of the entrance to the Lyceum Theatre tonight at seven o'clock in the evening. If you're afraid of something, bring two friends with you. You are a victim of deception. Don't bring the police. Otherwise, everything will be in vain. An unknown friend."