“Yes,” said Richard, in surprise. “He lost it a few months ago. He prized it very highly; it was a gift from a very dear friend.”
“Who is Dana?” asked Cardona.
“Roy Dana is an old friend of my father’s,” answered Richard. “One of my father’s best friends, in fact. He is a retired attorney, who lives in New Jersey.
“I called him before you came, to tell him of my father’s death. I learned that he went to Florida, two days ago.”
CARDONA was looking at the envelope. He noted that it was different from those which had contained the death messages.
The address was not typed. It was written in a rather shaky scrawl. But the postmark indicated the same office as the other letters.
“It was mailed two nights ago,” said Cardona to Biscayne.
“In between the death messages,” responded the professor.
“Yes,” said the detective. “The post office paid no attention to it, because it was not addressed to police headquarters.
“It may have come in yesterday morning’s delivery — perhaps not until yesterday afternoon.”