Severus Snape and his time at Number 12 Grimauld Place

Dumbledore decides that it is best for Snape to spend the rest of this summer at the Order's headquarters. While there, Snape continues to receive the call from Voldemort. When he returns from the Death Eater meetings he is not always in the same condition as when he left. Only 2 people seem to notice and want to help. His headquarters roommates; Fred and George Weasley.