However, as he meditated on this, the light was turned low, and in a few moments the door opened.

The doctor came down the steps, and out on the pavement, walking briskly along the street.

The reporter followed him on the other side of the thoroughfare.

Whether to do it in the dark or in the light, was the question that troubled Stratton.

If he did it in the dark, he would miss the expression on the face of the surprised man.