It happened very suddenly. The hook-nosed teacher looked past Quirrell’s turban straight into Harry’s eyes and a sharp, hot pain shot across the scar on Harry’s forehead. (Philosopher’s Stone, The Sorting Hat)

The green eyes found the black, but after a second something in the depths of the dark pair seemed to vanish, leaving them fixed, blank and empty. The hand holding Harry thudded to the floor, and Snape moved no more. (Deathly Hallows, The Elder Wand)

(Source: mintgum, via thetwinthatdied)