The Sign of Four was the second novel featuring which famous fictional detective, following A Study In Scarlet?
Arthur Conan Doyle Sir Arthur Ignatius Conan Doyle KStJ, DL (22 May 1859 – 7 July 1930) was a British writer best known for his detective fiction featuring the character Sherlock Holmes. Originally a physician, in 1887 he published "A Study in Scarlet", the first of four novels about Holmes and Dr. Watson. In addition, Doyle wrote over fifty short stories featuring the famous detective.
Knots and Crosses Knots and Crosses is a 1987 crime novel by Ian Rankin. It is the first of the Inspector Rebus novels. It was written while Rankin was a postgraduate student at the University of Edinburgh. In the introduction to this novel, Rankin states that Rebus lives directly opposite the window in Marchmont that he looked out of while writing the book.