From the category archives:

Orczy, Baroness Emma

The old man sitting in the corner of the Aerated Bread Company tea room had some interesting ideas about the solutions to crimes that had baffled the best efforts of Scotland Yard and other police agencies. Unfortunately for the cause of justice, the only person he confides in is a young newspaperwoman named Polly Burton. She listens intently as he presents his answers to a dozen of the most spectacular crimes in Britain and abroad. Are his deductions correct, or are they just the ramblings of. . . The Old Man in the Corner?