This was too much for Sir Humphrey. If a couple of robberies in his own house were nothing to do with him he would like to know what was. And how did the burglar get in without anyone hearing? Really, it was too much of a good thing.

Lady Matthews glanced at the long window. "Not locked, you know. While we were at dinner. Don't you think so, Frank?"

He nodded. Sir Humphrey picked up the evening paper and said with acerbity that it was time Frank got married to some woman who would put a stop to his senseless conduct. Mr. Amberley looked at him rather sharply, a tinge of colour creeping into his lean cheeks.

Lady Matthews' calm voice changed the subject.

But all was not over for Sir Humphrey. At three in the morning he was awakened by the telephone ringing in the library, which was immediately beneath his bedroom. He got up, swearing under his breath, and stalked out onto the landing just as the door of his nephew's room opened. "Since," he said awfully, "I have little doubt that call is for you, I will leave you to answer it." With which utterance he went back into his room and shut the door with terrible quietness.

Amberley laughed and went down the stairs, tying the cord of his dressing gown.

The call was for him. Sergeant Gubbins was speaking from the police station. There were fresh developments which he thought Mr. Amberley should be told about at once. All the same, if it hadn't been for Mr. Amberley's instructions he would not have taken it upon himself to rouse him at this hour.

"Get on with it!" snarled Amberley.

The sergeant said apologetically: "When I think how you had me out that night it makes me smile, sir."

"Does it?" said Amberley grimly. "What's happened?"