The Adventure of the Red Circle
When the mysterious lodger (actually a woman, not a man) shows up, she tells the detectives that the dead man was trying to kill her husband for betraying a cri
When the mysterious lodger (actually a woman, not a man) shows up, she tells the detectives that the dead man was trying to kill her husband for betraying a criminal enterprise known as the Red Circle. In the end, the couple are safe, the bad guy is dead and self-defense is the explanation.
