“Why?”

“Because, my friend, something has happened.”

“What sort of thing? How do you know?” I asked curiously.

Poirot smiled.

“A few moments ago the manager came hurriedly out of his office and ran upstairs. He was much agitated. The lift-boy is deep in talk with one of the pages. The lift-bell has rung three times, but he heeds it not. Thirdly, even the waiters are distrait; and to make a waiter distrait——” Poirot shook his head with an air of finality. “The affair must indeed be of the first magnitude. Ah, it is as I thought! Here come the police.”

Two men had just entered the hotel—one in uniform, the other in plain clothes. They spoke to a page, and were immediately ushered upstairs. A few minutes later, the same boy descended and came up to where we were sitting.

“Mr. Opalsen’s compliments, and would you step upstairs.”

Poirot sprang nimbly to his feet. One would have said that he awaited the summons. I followed with no less alacrity.

The Opalsens’ apartments were situated on the first floor. After knocking on the door, the page-boy retired, and we answered the summons, “Come in!” A strange scene met our eyes. The room was Mrs. Opalsen’s bedroom, and in the centre of it, lying back in an arm-chair, was the lady herself, weeping violently. She presented an extraordinary spectacle, with the tears making great furrows in the powder with which her complexion was liberally coated. Mr. Opalsen was striding up and down angrily. The two police officials stood in the middle of the room, one with a notebook in hand. An hotel chambermaid, looking frightened to death, stood by the fire-place; and on the other side of the room a Frenchwoman, obviously Mrs. Opalsen’s maid, was weeping and wringing her hands, with an intensity of grief that rivalled that of her mistress.

Into this pandemonium stepped Poirot, neat and smiling. Immediately, with an energy surprising in one of her bulk, Mrs. Opalsen sprang from her chair towards him.