"I'll tell you later. Go on."
Tamaroo paused to collect his thoughts, and continued: "So you see that the only way in which Berry could prevent the money going to the charity--in which case it would be lost to him altogether--was by getting Mr. Frank hanged. My master fancied that even if Berry did not murder Mr. Frank openly he might get some drug from Balkis which would kill Mr. Frank, without revealing that poison had been used. And that could have been done," said Tamaroo, impressively.
"Ah! I see now," cried Eustace. "Berry by means of this poison could have made Frank's death appear natural."
"Yes, sir. In which case the money would have gone to the charity. Mr. Lancaster knew that, being brought up by the lady aunt, his son would not commit a crime, so it was not likely that Berry would succeed in getting him hanged before the age of twenty-five."
"I see," said Frank, grimly; "but he has made a good shot at it. I was to be hanged for the murder of Starth, and then Natty here was to get the money."
"Yes," said Tamaroo. "And afterwards Mr. Denham was to be put out of the way, and Berry and his niece were to benefit."
"Very clever," muttered Natty. "But I'm not quite such a fool. And Mr. Lancaster is dead?"
"He is, sir. His disease got worse after he made his will, and he went to a leper settlement, where he died some time ago. As soon as I heard of his death I brought home these papers, only to learn that Mr. Frank was in danger of being hanged. To find him I plastered London with those posters. Then I--"
There was a smash of glass, and the blind of the middle window bulged out. Berry sprang into the room with a revolver. "I arrest you!" he called out to Frank, "for the murder of Starth. I arrest you!"
Jarman purposely overturned the lamp, and in the ensuing darkness confusion ensued. When it was re-lighted Tamaroo and Frank had disappeared.