In response, the chauffeur ran the car slowly in at the curb.

Captain Jack, opening the tonneau door, was quickly out on the sidewalk,
without any need having risen for wholly stopping the car, which then
shot forward again.

"Now, what on earth was that for?" demanded Eph Somers, as the car
sped on.

"Don't look back," replied Hal.

"Why not?"

"Well, a certain party would see you looking at him."

"Who?"

"Why, Jack had the good luck to see Millard going along on the sidewalk.
We've just passed the fellow!"

"Are we going to nab him?" demanded Somers, breathlessly.

"You'll have to leave that decision to good old Jack," chuckled Hal
Hastings. "He's out there, dogging Millard from the rear. It's Jack
Benson's affair just at this moment."

It was mighty hard for Eph to refrain from looking back. But he
restrained his curiosity.