"Herbert Timmons Emery, I arrest you for the murder of Marcia Tait and Carl Rainger. I have to warn you that anything"

The lank sandy haired figure stared only for a second before it dodged under the hand that had descended on its shoulder. It whirled a chair at Potter's legs; ducked again, while still crying something, and plunged down the staircase door. Potter caught a piece of a coat and then a leg. He should not have tripped the man up. They heard the cry out of the dark, and then the crash. Then there was silence while a white-faced Potter got up shakily on the landing, and they saw him peering down into the dark.

CHAPTER TWENTY

June Over Whitehall

Above the small severe name-plate reading, "Sir Henry Merrivale," the door was inscribed with staggering letters, splashed in white paint, "Busy! No Admittance! Keep Out! " And below, in an even angrier script, it added, "This means You!" The old hallway was musty and warm at the top of Whitehall's ancient rabbit-warren; through a crooked window on the stairs they could see the moving green of trees.

Katharine looked at the door and hesitated. "But it says!" she protested.

"Nonsense," said Bennett. He pushed open the door.

Both windows were open to the lazy June air; there was a smell of old wood and paper in the dusky room, and a hum of traffic from the Embankment below. H. M.'s big feet were on the desk and entangled with the telephone. His big bald head was hung forward so that the glasses slid down his nose, and his eyes were closed.

Bennett rapped on the inside of the door. "I'm sorry to interrupt, sir," he said, in the middle of a whistling snore, "but we thought..”

H. M. opened one eye. He seemed to be galvanized. "Go 'way! Out! I won't be disturbed, dammit! I sent you that report on the accordion-player yesterday afternoon; and if you wanta know why the key of G had anything to do with Robrett's dyin', then you, look in there and you'll see. I'm busy! I — who's there, hey?" He sat up a little, and then scowled savagely. "Oh, it's you two, hey? I might 'a' known it. I might 'a' known somebody like you would interrupt when I'm engaged on a very serious business. What are you grinnin' at, curse you? It is seriousl It's the Dardanelles matter, only I forget the chief part of it now. It's somethin' to do with the peace of the world." He sniffed, and looked at them in a disgruntled fashion. "Humph. You look sorta happy, and that's bad. "