Showing up uninvited

My version of a classic: "James & Lily return!". It is Harry's 5th year at Hogwarts, and while he and the rest of the gang are enjoying Umbridge's teaching methods, the adults are having "fun" bickering in Grimmauld Place. Until the doorbell rings! Harry & friends are hormonal teenagers, Molly suffers from hysteria, Black never wants to grow up. The others are a tad bit crazy