"Hold your tongue just now," whispered Alan, for Cicero was about to mention Joe Brill's name; "we'll come to that later. Who's that?"
It proved to be Mrs. Marry, who came in with part of a torn envelope in her hand. On the envelope was an obliterated stamp, but the writing had been torn off.
"I found this in Mr. Brown's room," she said, "on the floor by the edge of the carpet. How it escaped my dusting I don't know."
Blair looked at this piece of evidence.
"Jamaica stamp," he said.
"Strange!" cried the Rector. "I know Marlow was at one time in Jamaica."
"And my husband, Dr. Warrender, came from Jamaica," said the widow.
There was silence. They looked at one another. But no one had any explanation to offer.