“No.” Daniel looked and sounded determined. “They think I’m nothing but a nuisance. Maybe I am. But if I analyze this myself, without someone to—”

“Don’t analyze it yourself. You have colleagues, friends, haven’t you?”

“None I would want to give this to.”

“Are you sure you have the piece where the iodine was poured?”

“I am. A few drops were on the edge of the flagstone. I also have pieces taken from each side of that piece, for comparison.”

“Naturally. Who suggested this step to you?”

“No one. It occurred to me this morning, and I immediately went up there—”

“Indeed. I congratulate you. Take it to the Fisher Laboratories. You know them, don’t you?”

“Certainly.” Daniel flushed. “I happen not to have any cash at the moment. They are expensive.”

“Establish credit. Your sister’s estate. Aren’t you her nearest relative?”