Later he bought a copy of the Nicoise and learnt of the tragedy on the San Remo road. It brought him back to the house, a visibly agitated man.

"This is shocking news, my dear," he panted into the saloon and stood stock still at the sight of Mr. Jack Glover.

"Come in, Briggerland," said Jack, without ceremony. There was a man with him, a tall, keen Frenchman whom Briggerland recognised as the chief detective of the Préfecture. "We want you to give an account of your actions."

"My actions?" said Mr. Briggerland indignantly. "Do you associate me with this dreadful tragedy? A tragedy," he said, "which has stricken me almost dumb with horror and remorse. Why did I ever allow that villain even to speak to poor Lydia?"

"Nevertheless, m'sieur," said the tall man quietly, "you must tell us where you have been."

"That is easily explained. I went to San Remo."

"By road?"

"Yes, by road," said Mr. Briggerland, "on my motor-bicycle."

"What time did you arrive in San Remo?"

"At midday, or it may have been a quarter of an hour before."