"Did you shut that window?" he demanded.
"Of course I did," said Essenden. "You saw me shut it."
"You shut it properly?"
"Of course I did," repeated Essenden.
Harver pushed the table out of his path with a sweep of one arm.
"Well, if it hasn't blown open," he said, "somebody's opened it. I've just seen those curtains move!"
He stood in the centre of the group, a red-headed giant, and the others instinctively checked their breath.
Essenden shifted away.
Ganning's right hand sidled round to his hip pocket, and Flash Arne buttoned his coat deliberately.
Harver stepped cautiously forward on tiptoe.