He could not see into the room, but that silence was eloquent.

It seemed as though he could picture the two men--Lannigan leaning suddenly forward--Lannigan and Whitey Mack staring tensely into each other's eyes.
"You--WHAT!" It came low and grim from Lannigan.
"That's what!" asserted Whitey Mack bluntly.

"You heard me! That's what I said! I know who the Gray Seal is--and I'm the only guy that's wise to him.

Am I letting you in right ?" "You're sure ?" demanded Lannigan hoarsely.

"You're sure?
Who is he, then ?" There was a half laugh, half snarl from Whitey Mack.
"Oh, no, you don't!" he growled.