"If I think fit," he answered loftily.

"I only ask, because you mustn't worry the Seraph. You can search his rooms, but you mustn't try to cross-question him. He's not equal to it."

"I think you'd be wise to accept the extension of time."

"My dear man, what's the good? If we can't find your sister, we can't. Saturday's no better than Monday. As Monday was the original time, you'd better stick to it and get your search over."

"If Aintree's ill...."

"Humbug! Nigel," I said. "If you believe we're harbouring a criminal, it's your duty to verify your belief. If you think you can teach Scotland Yard its business, bring your detectives and prove your superior wisdom. Bring 'em to-morrow; bring 'em to-night if you like, and as many as you can get. The more there are," I said, turning at the door to fire a last shot, "the more voices will be raised in thanksgiving for Nigel Rawnsley."

The following morning I just mentioned to the Seraph that we need expect no search-party that day, and then went on to complete certain other arrangements. Raymond Sturling called in on the Tuesday morning to report his success in the negotiations for Mountjoy's villa at Rimini. I rang up my solicitor and told him to conclude all formalities, and on the Wednesday afternoon dropped in at Carlton House Terrace, and mentioned that Maybury-Reynardson had cleared up odds and ends of work and felt justified in accepting my vicarious invitation to accompany the Governor of Bombay as far as Genoa. On Thursday I called at Chester Square.

Elsie's car was standing at the door when I arrived, and she had paid me the compliment of putting on all the clothes I had most admired on the previous Sunday. Very slim and pretty she looked in the white coat and skirt, and when she smiled I could almost have said it was Joyce. The face was older, of course, but that difference was masked when she dropped the black veil; the slight figure and fine golden hair might have belonged to either sister.

I complimented her on her appearance, and suggested driving round to Adelphi Terrace. The Seraph was still rather weak and in need of attention, and though I had two nurses in the flat to look after Joyce, they would not be there for ever. As we crossed Trafalgar Square into the Strand I recommended Elsie to raise her veil.

"Just as I thought," I murmured as we entered Adelphi Terrace. My plain-clothes Yorkshireman was watching the house from the opposite side of the road; Nigel was watching my plain-clothes Yorkshireman from the corner of the Terrace.