Alistair looked at the familiar figure in the distance, suddenly feeling a mischievous urge to tease him. He cast the Disillusionment Charm on himself and quietly followed in Professor Snape's footsteps.
"Good evening, Professor Snape!" He materialized from behind Professor Snape, poking his head out playfully as he asked, "What are you doing here? Is it your night patrol tonight?"
Professor Snape abruptly released the hand gripping his left arm, letting his hands hang at his sides. Smoothing his brow slightly, he asked, "What are you doing here, Ruler?"
Chapter 490