Ruby takes pity on a young girl cast out of the local Chinese take-away. Tobias thinks this is really going to complicate his life. Trying to work out normal subtraction was bad enough, but Chinese take-aways? That’s going to be nigh on impossible. Ruby allows the curious girl to stay in her caravan until she gets herself another job and a home. She is a quiet, secretive, mysterious young girl who keeps disappearing for hours on end. What is she up to? Not looking for gainful employment, Eddy is certain of that. Then Chen is stolen from the caravan and Ruby discovers a terrible secret about her lodger, but is it all too late?