Autumn's Chill

Severus Snape hates the cold, possibly even more than he hates grading abysmally graded essays. So when he returns to his personal quarters on the first day of the new term and discovers that Albus Dumbledore has left him an odd...gift...will it really be the answer to his autumnal woes or simply more proof that Dumbledore is far more eccentric than he appears?