Well, thought Harry, as he crossed Magnolia Crescent, turned into Magnolia Road and headed towards the darkening play park, he had (by and large) done as Sirius advised. He had at least resisted the temptation to tie his trunk to his broomstick and set off for The Burrow by himself. In fact, Harry thought his behaviour had been very good considering how frustrated and angry he felt at being stuck in Privet Drive so long, reduced to hiding in flowerbeds in the hope of hearing something that might point to what Lord Voldemort was doing. Nevertheless, it was quite galling to be told not to be rash by a man who had served twelve years in the wizard prison, Azkaban, escaped, attempted to commit the murder he had been convicted for in the first place, then gone on the run with a stolen hippogriff....…