The man was obviously dead.

The Inspector took his handkerchief and covered up the head.

A few feet away was a heavy paper-weight.
"Killed by a blow from behind," French remarked grimly, "with that little affair.

Look here!" They glanced down at the girl.

Quest's eyebrows came together quickly.
There were two blue marks upon her throat where a man's thumbs might have been.
"The hands again!" he muttered.
The Inspector nodded.
"Can you make anything of it ?" "Not yet," Quest confessed.