"I am convinced that, whoever she may suspect, she knows nothing of the murder," he said shortly.
"I think she suspects Milburgh," he said.
He put his hand in the inside of his jacket and took out a pocket case, opened it, and drew forth the two cards bearing the finger impressions he had taken of Odette Rider. It required more than an ordinary effort of will to do this, though he would have found it difficult to explain just what tricks his emotions were playing.
"Here are the impressions you wanted," he said. "Will you take them?"
Whiteside took the cards with a nod and examined the inky smudges, and all the time Tarling's heart stood still, for Inspector Whiteside was the recognised authority of the Police Intelligence Department on finger prints and their characteristics.
Tarling remembered the scene for years afterwards; the sunlit path, the straggling idlers, the carriages pursuing their leisurely way along the walks, and the stiff military figure of Whiteside standing almost to attention, his keen eyes peering down at the little cards which he held in the finger-tips of both hands. Then:
"Interesting," he said. "You notice that the two figures are almost the same--which is rather extraordinary. Very interesting."
"Well?" asked Tarling impatiently, almost savagely.
"Interesting," said Whiteside again, "but none of these correspond to the thumb prints on the bureau."
"Thank God for that!" said Tarling fervently "Thank God for that!"
The firm of Dashwood and Solomon occupied a narrow-fronted building in the heart of the City of London. Its reputation stood as high as any, and it numbered amongst its clients the best houses in Britain. Both partners had been knighted, and it was Sir Felix Solomon who received Tarling in his private office.
Sir Felix was a tall, good-looking man, well past middle age, rather brusque of manner but kindly withal, and he looked up over his glasses as the detective entered.
"Scotland Yard, eh?" he said, glancing at Tarling's card. "Well, I can give you exactly five minutes, Mr. Tarling. I presume you've come to see me about the Lyne accounts?"
"We have not been able to start on these yet," said Sir Felix, "though we are hoping to go into them to-morrow. We're terribly rushed just now, and we've had to get in an extra staff to deal with this new work the Government has put on us--by-the-way, you know that we are not Lyne's accountants; they are Messrs. Purbrake & Store, but we have taken on the work at the request of Mr. Purbrake, who very naturally wishes to have an independent investigation, as there seems to be some question of defalcation on the part of one of the employees. This, coupled with the tragic death of Mr. Lyne, has made it all the more necessary that an outside firm should be called in to look into the books."