Harry Slithers-in: Not the Order of the Phoenix

After the return of Voldemort at the end of the Tri-Wizard Tournament Harry is forced to return to the Dursleys. It only takes him a few days to realise things are not the same. His friends are acting strangely and he cannot seem to get a straight answer. But then Tracey arrives with and soon things start taking an unusual direction. Harry's 5th year in Slytherin. I am not JKR.