the while?" I asked.

"So we couldn't follow him," said Sahwah, with startling clear-
sightedness.

Nyoda, who doesn't believe in premonitions, had one then. "I don't
believe he's a relative of hers at all," she said, flatly. "I have a
feeling in my bones that he isn't. I also have a feeling that something
has happened to Margery which it is our business to investigate."

In less time than it takes to tell about it we had inquired the
direction taken by the driver of the red roadster and had started in
pursuit. The fog was closing in on us thicker than ever and the Glow-
worm's eyes shone dimly through the white curtain. We could not go
ahead at full speed because we had to proceed slowly and carefully. The
fact that the road was exceptionally good along here was the only thing
that kept us from accident, I suppose. If we had struck some of the
holes that we did a distance back--

We were divided between joy over the fact that the Frog couldn't go any
faster than we were going in that fog and so couldn't use his powerful
car to his advantage, and the fear that he would slip off into some
side road without our noticing it and so escape us. The fog naturally
muffled all sounds, but we recognized at last the steady throbbing of a
motor ahead of us on the road and knew that we were on the trail of the
fugitives. We didn't know whether the Frog knew we were after him or
not, but it seemed to us that the throbs began to grow fainter after a
time as if the car were getting farther away. Finally, they stopped
altogether and we began to realize that after all we had not much
chance to catch up with that powerful car.