Chapter 19

⁠​​​‌​​​​​​​‌‌​​​​‌​‌​‌‌‌‌​‌‌​​​​​​​​‌‌‌​​​‌‌‌‌​‌‌​‌‌​​‌​​‌‌​​​‌​⁠Superintendent Merrington sat in his office at Scotland Yard, irascible with the exertions of a trying day which had made heavy inroads upon his temper and patience. He had several big cases on his hands, his time had been broken into by a series of visitors with grievances, and he had been called upon to adjust a vexatious claim of a woman attacked in the street by a police dog, while the animal