This is a very poor book.
The main author has no reported postgraduate professional psychology qualifications, and yet rants at length about "psychological syndromes". Many of these rants are of questionable accuracy, to say the least.
Worse, Turvey accepts second hand reports and critiques of processes and events without corroboration, and then takes them as established fact. On more than one occasion, to my certain knowledge, the reports that he relies on are wrong, and yet he not only accepts, but endorses and even extends their false conclusions.
Turvey is highly critical of the tendency of others to run with unproven assumptions, and yet does this time and again in this dreary tome.
The presentation of the content, with a sober cover, and explicit black and white victim photographs lends an impression of gravity and reliability, but this is not supported by thoroughness of research or accuracy of judgements.
It is a very expensive book, but its biggest cost is likely to be in misleading readers.
Very, very bad.