“You have explored the house?”

“As far as I could,” Granet replied. “The place is almost in a state of siege.”

“Proves that we are on the right track, any way. What’s that building that seems to stand out in the water?”

“How do you know about it?” Granet demanded.

“I sailed out this evening, hired a boat at Brancaster Staithe. The fellow wouldn’t go anywhere near Market Burnham, though, and I’m rather sorry I tried to make him. They’ve got the scares here, right enough, Granet. I asked him to let me the boat for a week and he wasn’t even civil about it. Didn’t want no strangers around these shores, he told me. When I paid him for the afternoon he was surly about it and kept looking at my field-glasses.”

Granet frowned heavily.

“It isn’t going to be an easy matter,” he confessed. “I hear the Admiralty are going to take over the whole thing within the next few days, and are sending Marines down. How’s the time?”

They glanced at their watches. It was five minutes before midnight. As though by common consent, they both crossed to the window and stood looking out into the darkness. A slight wind was moving amongst the treetops, the night was clear but moonless. About half a mile away they could just discern a corner of the club-house. They stood watching it in silence. At five minutes past twelve, Granet shut his watch with a click.

“Not to-night, then,” he whispered. “Collins!”

“Well?”