"Was it you give the warning, and they sent for the police?"
Johnson was leaning eagerly forward, a hand on each knee.
"Yes, that was me. You can let them think it was you, if you like.
You were off duty, weren't you?"
"I was," said Johnson, "in the arms of Murphy "
"Well, the police didn't come quick enough. But I was there a lonely detective. And I followed them."
"You did?"
"And I saw them hide the booty and I know the other stuff from Houghton's Court's in the same place, and I heard them arrange about when to take it away."
"Come and show me where," said Johnson, jumping up so quickly that his Windsor arm-chair fell over backwards, with a crack, on the red-brick floor.
"Not so," said Gerald calmly; "if you go near the spot before the appointed time you'll find the silver, but you'll never catch the thieves."
"You're right there." The policeman picked up his chair and sat down in it again. "Well?"
"Well, there's to be a motor to meet them in the lane beyond the boat-house by Sadler's Rents at one o clock tonight. They'll get the things out at half-past twelve and take them along in a boat. So now's your chance to fill your pockets with chink and cover yourself with honour and glory."