<P>Christopher Fowler's Peculiar Crimes Unit novels have been hailed for their originality, suspense, and unforgettable characters. Now Arthur Bryant, John May, and their team of proud eccentrics have been given only one week to hunt down a murderer they've already caught once -- and who is now luring them down into the darkest shadows of the London Underground.</P><P></P><P>The only thing the Peculiar Crimes Unit knows about the man is that he got out of a locked room and killed one of their best and brightest. As the city blithely goes about its way, Bryant and May -- two men of completely opposite methods -- are getting closer to the madness that is driving their man to murder.</P>