M.T. Anderson's short story "Berceuse" about a night of babysitting gone wrong is great
It deliciously stacks one horror upon another at breakneck speed. I read it in McSweeney's Issue 71, a horror-themed anthology (with double slipcover) called "The Monstrous and the Terrible." The anthology is available at Amazon, and the prolific author has written lots more for adults and kids.