about.â
Mannering said: âOh? Whatâs the other?â
âMystery callers, mystery packets â thereâs another in the settee.â
âSo thatâs it,â Mannering said, slowly.
âNot why Iâve been unspeakable, butââ
âWeâll talk over coffee,â Mannering said.
He led the way into the drawing-room, the largest room in the apartment. It was a treasure-house of lovely furniture, with grey and blue decor, richness of colour and of age. Small Dutch panels, exquisitely painted, hung on the walls, each with its separate light.
Outside, it was dark: the curtains werenât drawn. They stood side by side, looking towards the Thames, its broad, flat bosom reflecting lights from the two bridges in sight, and from the Embankment. Heavy clouds were blowing up; the window shook in a sudden gust.
Mannering drew the curtains.
âWell?â asked Lorna, and sat down.
Mannering perched on the arm of her chair.
âA further adventure in the life of a certain diamond,â he said.
âThe Adalgo,â Lorna said, heavily.
âThere is one, and only one, Adalgo. Itâs now in the safe at the shop. But there are a number of replicas, or similar gems. Theyâve popped up all over the world. Some are real stones, very like the Adalgo at a casual glance. Some are paste, and perfect copies. After I bought the Adalgo, and put it in the window for the first time, three separate men came to see me and told me that he had the Adalgo.â
âOh,â said Lorna.
âI broke the news to them. They didnât like it, and asked me to examine their gems. Two were genuine diamonds, with slightly different measurements. The other was a paste thing, worth about thirty shillings.â Mannering laughed. âI spread word among the trade that I was interested in similar gems. There may be only one Adalgo, but if I could get a collection, each diamond about the same size and quality, there would be something worth having.â
âFor your own collection?â
âThatâs how it started. I didnât know what Iâd let loose. Many mysterious merchants telephoned the shop, they didnât want to see me there, so I told them to bring their stuff here. Each, of course, thought he had the Adalgo. You had one this afternoon.â
âWhy didnât you tell me?â
Mannering said gently: âFuel to the fire? By then, it was an outsize mystery. I could understand finding two or three replicas and even two real stones pretty much alike, but altogether, a dozen have turned up. Odd, isnât it?â
âOdd! It sounds crazy!â
âItâs worse. Hold tight!â He rested a hand on her shoulders. âThe police have been paying some attention to Quinnâs. Tanker Tring was in the street the other week, when Flick came along to see me. Our bad luck! Tring always thinks the worst. He canât really believe that Flick Leverson and the bold bad Baron have really retired.â
Lorna jumped up.
âSteady,â Mannering said.
âHow can he believe youâve stopped being the Baron? Flick visits you. Whenever you get half a chance, you fling yourself into crime. Youâre a friend of thieves and fences, even when you investigate a case, you thumb your nose to the police â look at this one. It shouts crime. Have you told Bristow?â
âWhy shouldââ
âYouâve kept it to yourself because youâve some silly notion that youâll find excitement in it. You laugh at me because Iâve never liked the thing, but whoâs really superstitious? Donât interrupt! You are. Itâs a diamond with a history, a blood- diamond, thatâs why you bought it. Isnât it?â She almost shouted.
Mannering snapped his fingers.
âIâve an idea!â
âNever mind your ideas. Isnât that why you bought it?â
âNot in a thousand years.