Harry Potter- Muggle war

Harry follows his target, a man called Brian under his invisibility cloak. He thought heavily about the problem. He practically knows where the hideout is but the fidelius-charm which had protected him and his friends well in the past now proves equally effective against his line of work. The best he can hope for is to cling into him the moment he disaperates so that he too counts as a secret wielder. He wouldn't even actually disappear with him, just touch him in the right moment... Well, that isn't how it played out tonight. Once again he didn't got the chance to approach and best to let him disappear rather then let him know he is being followed. He sighs and aperates around the place he suspects or rather the few stops in question. 'A nice 5 minutes walk and if I can't see it I'll cal