Mrs.Collins's love for Whitmore was intensely genuine, and moreover, it was pure." Britz paused, noting the bewildered expression on the faces of Manning and Greig.

In their eyes the case had taken on a hopeless, desperate aspect.

By faultless reasoning Britz had established the presumptive innocence of the very ones among whom he had confidently expected to find the guilty one.
The chief grew visibly disturbed.

So this was the end of Britz's maneuvering! Failure appeared to be written in large capitals across the investigation.
"You don't mean to imply that an outsider committed the murder ?" Manning blurted.
"Not for an instant," answered Britz.

"I have simply been analyzing the evidence as it concerns the four suspects individually.