Sir Arthur Ignatius Conan Doyle was a Scottish writer and physician, most noted for his fictional stories about the detective Sherlock Holmes, which are generally considered milestones in the field of crime fiction.He is also known for writing the fictional adventures of a second character he invented, Professor Challenger, and for popularising the mystery of the Mary Celeste. He was a prolific writer whose other works include fantasy and science fiction stories, plays, romances, poetry, non-fiction and historical novels. «The Adventure of the Second Stain» is one of the 56 Sherlock Holmes short stories written by British author Sir Arthur Conan Doyle. The story begins by portraying a scene involving Lord Bellinger, the Prime Minister who comes to Holmes in the matter of a document stolen from Hope's dispatch box. This document could bring about very dire consequences for all Europe, even war. The story has lots of tangled and unintelligible moments! If you want to know who a murder is and reveal the secrets — read «The Adventure of the Second Stain» !