On the Edge of the Law

“After all, Watson, I am not retained by the police to supply their deficiencies,” said Holmes, reaching for his clay pipe. “I am shielding a criminal, it is true, but I am also saving a soul.”
There are times when a detective faces a difficult question. To uphold the law, or to break it? Whether for higher principles, due to circumstances, or out of pure selfishness, almost everyone must resolve this conflict at some point. How do famous, and less famous, detectives act when they stand on the edge of the law? This selection of classic detective stories will answer that very question.