I began to suspect that I had in some way antagonized Frayne, who at that moment seemed more intent upon working up formal evidence to give before the coroner, rather than in pushing forward the investigation of the crime, and so finding a clue to the culprit.

I could see that he regarded the minute investigations I was making with undisguised and contemptuous amusement. Of course, he was polite to me, for was I not the friend of the Chief Constable? But, all the same, I was an amateur investigator, therefore, in his eyes, a blunderer. He, of course, did not know at how many investigations of crime I had assisted in Paris, in Brussels, and in Rome—investigations conducted by the greatest detectives in Europe.

It was not to be expected that an officer of the Norfolk Constabulary, more used to petty larceny than to murder, would be so alert or so thorough in his methods as an officer from Scotland Yard, or of the Sûreté in Paris.

Arguing thus, I felt that I could cheerfully disregard the covert sneers and glances of my companions; and plunged with renewed interest into the work I had undertaken.

In the sand before the seat, I saw two long, wide marks which told me that old Mr. Gregory must have slipped from his position in a totally helpless condition. That being so, how was it that his body was found several feet away?

Had it been dragged to that spot in the grass? Or, had he crawled there in his death agony?

In the little knot of people who had gathered I noticed a young fisherman in his brown blouse—a tall youth, with fair curly hair, whom I knew well and could trust. Calling him over, I despatched him to the town for a couple of pounds of plaster of Paris, a bucket, some water, and a trowel.

Then I went on methodically with my investigations.

Presently the coast-guard, George Simmonds, a middle-aged, dark-haired man, who was a well-known figure in Cromer, came up and was introduced to Frayne as the man who, returning from duty as night patrol along the cliffs, early that morning, had discovered the body.

I stood by listening as he described the incident to the detective inspector.