Alastor meticulously went over his appearance in the mirror before stepping out, his curly hair flattened by the pomade he used. He walks to the store and gets some groceries, ignoring the sneers at his back. He holds his breath to avoid attacking the cashier when they start needling him about where he got his money due to his skin color, "I'm a radio personality." He replies despite the clerk laughing mockingly. 'Eat him' the dark voice says, alastor feels the weight of invisible irons and a collar only he can see or feel as the creature tries to take over. He closes his eyes and counts to ten before paying and walking out guickly.

('think' is the wendigo instincts. Only alastor can hear them unless a telepathic person is there. Think Dr. Jekyll and Mr. Hyde situation only Mr. Hyde is a wendigo slowly corrupting Dr. Jekyll.

In case you don't get it, Alastor is Dr. Jekyll in the analogy)