“Hungry, are you?” Shadow Stalker murmured to herself.  She shifted into her shadow state, moved along the rooftop to follow the girl.  

Welp.

Time for round two.

Shadow Stalker was almost entirely silent in this state, virtually impossible to see, especially in this light, unless someone was actively looking for her.

I suppose if she keeps following Skitter rather than confronting her, she could find out some important information.

She was a gray shadow against a background of black and shades of gray.

How many shades?