The Complete Dr. Thorndyke, Volume 1

Volume I contains the first three Thorndyke novels, published in 1907, 1911, and 1912, respectively. Set in London during the time that Sherlock Holmes was still in practice, these introduce us to Thorndyke and his world, as well as painting a vivid picture of the London of that era...
The Red Thumb Mark - In which Dr. Jervis encounters his old friend, Dr. Thorndyke. Soon after, they're drawn into a mystery where a man is accused of murder, and his own bloody thumbprint, evidence that cannot be denied, places him absolutely at the scene of the crime. As Thorndyke investigates, it becomes apparent that he is too much of a threat and must be removed...
The Eye of Osiris - Wherein a man vanishes and is presumed dead. But from where and when exactly did he disappear? That is the initial question, but by the end it's much more complex, with one of the most unique solutions in mystery history!
The Mystery of 31 New Inn - Dr. Jervis is summoned at night by closed carriage to treat a gravely ill patient - but is he simply sick or being murdered? His suspicions continue to grow, and Thorndyke provides a unique solution. But that's only half, as the two also become involved in an unusual death related to a young man's inheritance.