“I had a hunch,” replied Cardona. “I told you that much yesterday, commissioner.”
“Last night,” reminded Weston, “you also mentioned another hunch — that there might be a connection between the murders of Silas Harshaw and Louis Glenn.”
“I am sure there is a link between them!” declared Cardona.
“Ah!” exclaimed Biscayne. “You have unearthed some new facts since we left you?”
“No,” said Cardona. “I have found no worth-while clews. But I have received something that makes me sure these two deaths were engineered by the same parties.
“You speak of coincidences, professor. They don’t happen twice in a row — not like this!”
As he spoke, Cardona drew an envelope from his pocket. It was identical with the envelope that Roger Biscayne held.
From the envelope, Cardona extracted a sheet of paper. He unfolded it and laid it triumphantly upon the glass-topped desk.
“This letter,” he announced, “arrived in this morning’s mail!”
Weston and Biscayne were staring at the typewritten sheet. It was very similar to the letter that had come two days before, but the wording varied slightly: