The Shadow had marked it with his own observation lines, erasing some of the more doubtful ones.
The Shadow was marking the places where they had last been traced.
The Shadow marked the number of his paces.
The Shadow marked with a bit of chalk the spot Stark had touched.
Shadows marked the bottom, and a hollow fell away beneath a steep-sided rock.
When the dot showed red, The Shadow had marked the limit of their advance.
None were immune once The Shadow had marked them for destruction.
The Shadow was marking Graff off the list of possible murderers.
Clyde drifted toward the booth which The Shadow had marked.
This time, The Shadow marked it with three white pins and three of black.