I've reposted these two chapters to correct small errors. In chapter 40 I had Jack installing a device to check for his being subject to long-range miking, but a reader pointed out that there's no such thing. A microphone doesn't produce any signal that can be detected. In chapter 41 I wrote "hypothecate" when I intended "hypothesize." "Hypothecate" is an obscure term meaning to pledge an asset as security, i.e. for a loan, and I misused it. The changes are very minor, so if you've read those chapters you won't need to go back.