Satisfied that McGinnis was the person, he considered the vow fulfilled.
This was, indeed, the true reason.
But was McGinnis the man?
As closely as "death hangs to a nigger," Shadow hung to McGinnis, nor ever let him get out of his sight.
More than once the hand of the mysterious detective sought the butt of his revolver, as it had done in the saloon, in the first fever of excitement subsequent to the recognition.
An equal number of times, however, the fingers unclasped from the weapon.
While McGinnis filled the bill as far as the description went, and while Shadow would have staked his life that he was the man, he had sense enough, and was cool enough, to be aware that after all he might be mistaken.
He did not wish to kill the wrong man.
That would be worse than no revenge at all.
No, he must be sure beyond even the smallest doubt, before he fired the fatal shot.