I heard a review for this book on Radio London, last year I think. It's about someone living /hiding in a house without the owner knowing. I think they were living in the loft or an outbuilding but taking food & showering etc. when the owner goes out. I'm not sure if the intruder is known to the house owner or if they are just an admirer/stalker. I think I looked up the book at the time on Amazon & it had quite mixed reviews. I've tried looking on Amazon again and googling variations of the story, but no luck for the past few months. Does it ring a bell with anyone who thinks that they've read it or maybe a review. Thanks.