Fourth book by Paul Brook, which illustrates a number of "darker" effects, supposed to make the audience think you are in league with the devil. Some good ideas and bold methods, but practical, although not everything for regular perfomances. Very detailed, as all Brook's books.
Also interesting the description of an envelope to exchange billetts. The first effect (prediction of time of death) is particularly interesting, as is "Serial Killer" (relevation of a serial number of a note) but more difficult to pull off.