The jewelers accepted Mr. Wynne’s proposition.  Mr. Wynne bowed his thanks, and handed to Mr. Czenki a scientific periodical opened at a page which bore a head-line: 

Newly Discovered Property of Radium. 
Diamonds, Rubies, Emeralds and Sapphires
Changed in Color by Exposure of One
Month to Radium.

For the fourth time Red Haney underwent the “third degree.”  It culminated in a full confession of the murder of Mr. Kellner.  There had been no accomplice.

“Yer see, Chief,” he explained apologetically, “you an’ that other guy” (meaning Mr. Birnes) “was so dead set on sayin’ there was somebody else in it, an’ was so ready wit’ yer descriptions, that it looked good to me, an’ I said ‘Sure,’ but I done it.”