Kingsley Cross is the pen name chosen by Billy Conn under which he writes the Marc Logadon and CJ series of thrillers.
The other novels under his own name are intended as stand alone works of very different flavour and tone. Save the common authorship these works have nothing in common with one another. Finding a Kingsley Cross book is intended to alert the reader that there will be familiar characters albeit involved in different action based story lines. Like all thrillers these are intended essentially as entertainment.