The added presence of a butler of magnificent bearing and of an athletic looking chauffeur increased his sense of security.

Their presence seemed to afford a feeling of security to the prisoner also.

As he brought the car to a halt, he breathed a sigh.

It was a sigh of deep relief.
Jimmie fell from the tonneau.

In concealing his sense of triumph, he was not entirety successful.
"I got him!" he cried.