And that man was McGinnis.

When he left the place Shadow followed him.

Like a sleuth-hound he kept on the track of the evil man, and so carefully did he time his movements, that the suspicions of McGinnis were not aroused.

Light-footed as a cat, noiseless as a very shadow, gliding along like a ghost, a better person than the mysterious little detective could not have been found for the purposes of dogging and pursuit.

Gradually the expression of excitement left his face, and it became very stern and set.

It pictured a grim and unalterable purpose.

And that purpose was—vengeance!

That is, if McGinnis should prove to be the right man.

Shadow had been mistaken before, and there was a possibility of his being so again.

But he was satisfied that this time he had found the right man.