"Thith, mithter. He came in about eight, ath I thay. I wath there, doing a bit o' bithneth with another cuthmur. Batheverie, he didn't thtop. He wathn't in the plathe three minuteth, and while he wath in he theemed—to me—to be a bit fidgety—thuthpithious, like. Looked round and about—cautiouth. Then he went—and I followed him. According to inthructionth from Mapperley there."

"Where did he go?"

"Well, mithter, I'll give you the particularth—in full: when I theth out on a job o' that thort I do it proper. He turned out o' Candlethtick Pathage into the Lane, and he had a drink at a bar there. Then he went to Trafalgar Square Tube. I wath clothe behind him when he booked——"

"A moment. Does he know you?"

"May jutht know me by thite, mithter, but not enough to exthite any thuthpithion in hith mind if he thaw me there behind him. I never had no truck with him—never thpoke to him."

"Well, go on. Where did he book to?"

"Warwick Avenue, mithter. Tho did I—of courth. When we got there, I followed him out—at a thafe dithtance. He turned down to the Canal, crothed the bridge, and went down to Thant Mary'th Manthion'th. And there he went in."

Hetherwick glanced at Mapperley. Mapperley permitted himself to wink at his employer—respectfully, but knowingly.

"Went into St. Mary's Mansions, eh?" said Hetherwick. "Walked straight in?"

"Straight in, mithter—front entranth. I thee him, from acroth the road, talking to the man in livery—porter or whatever he hith. I could thee through the glath doorth. Then I thee both of 'em go up in the lift. Tho I waited about a bit, jutht to thee if he'd come out. He did."