The unicorn, when it finally turned up (Destrey's arse was starting to feel kinda sore) was a timid creature.
Maybe she really ought to have sung, but Destrey wasn't going to give Shylock the satisfaction of being right. Or maybe they could have borrowed some oats from the Care of Magical Creatures paddock. That might have lured it closer more quickly.
Eventually, however, the unicorn did was it was supposed to do. It made its way across the clearing and laid its head in Destrey's lap.
For a moment, it was an idyllic scene and if the rest of the school had been present, at least half of them would have said it was a miracle. Up until the unicorn began to panic.
It was on its knees, so it couldn't get up, especially not with Destrey holding it down so her brother could slip his potions knife into its eye socket, deep into its brain.
"There," he said. "And you barely spill any blood this way. You can drain it later. Well, not too much later. You know what I mean."
He began to tie a rope about the carcass' hind-legs so they could hang it where no wild animals would get to it.