With disruption in the house from Bill's new job it is the worst time possible for Ben to take to his bed ill. Things are further complicated by Bill's having to look after Farty while the Grimeses are on holiday. Having both to cope with, Bill gives Ben a doggy aspirin when she runs out of regular ones, resulting in him being ever sicker. Worrying about this, spending the night on the sofa, Bill is further frightened by a massive thunderstorm that nobody subsequently appeared to hear. Part of this portent is clarified when Farty falls ill and Bill and Ben reluctantly decide to have him destroyed. Another aspect is the triggering in David of an increasingly morbid obsession with death. (thetvdb.com)