"I'm certain it was whatever there was in it that made him send me out last night, and maybe the letter in it'll tell us something." However, there was no letter in the envelope--there was nothing.

But on the envelope itself was a postmark, at which Chisholm instantly pointed.
"Peebles!" said he.

"Yon man that you found murdered--his half-ticket's for Peebles.

There's something of a clue, anyway." They went on searching the clothing, only to find money--plenty of it, notes in an old pocket-book, and gold in a wash-leather bag--and the man's watch and chain, and his pocket-knife and the like, and a bunch of keys.

And with the keys in his hand Mr.Lindsey turned to the chest.
"If we're going to find anything that'll throw any light on the question of this man's identity, it'll be in this box," he said.