Were there nothing else, I confess we should be compelled to look elsewhere for the assassin.

But all the evidence, taken as a whole, leads irresistibly to the conclusion that one of them shot Whitmore.

There is not the slightest trace of any outside agency having been employed." "But if they're individually innocent, how can they be collectively guilty ?" demanded the chief.
"You've misconceived my meaning," said Britz.

"You know, in a general way, what has been accomplished in the case.

So you must be aware of the peculiar actions of all four of the suspects.