"Anything else ?" "A few minutes after the van had gone a man in motoring dress came out of the house," said Dieusy.
"In motoring dress ?" said Guerchard quickly.
"Yes.

And a little way from the house he threw away his cigarette.

The scavenger thought the whole business a little queer, and he picked up the cigarette and kept it.

Here it is." He handed it to Guerchard, whose eyes scanned it carelessly and then glued themselves to it.
"A gold-tipped cigarette ...

marked Mercedes ...