In my review of Jack Higgins' last novel I said that his writing had become so formulaic that you could easily skip chapters and correctly guess exactly what was in them. "Bad Company" is even worse: anyone who has read an earlier Sean Dillon could probably write this novel themselves after reading the synopsis on the dust-jacket (I assume Higgins either wrote this in his sleep, or got his dog to write it). There is no sense of character (Ferguson, Dillon, the Salters etc all talk the same now), the action happens in all the usual locations (hotel piano bars, Wapping) and the plot development is nil.
"Bad Company" is identical to the previous half dozen Dillon stories: nasty baddies have an explosive secret on a central character, nasty baddies are out to get everyone but luckily Dillon gets them first. Having killed off all the Rashids in the last 2 books, Higgins has to create a new carbon-copy adversary, who is the surprise "silent partner" of the Rashids and who happens to own the only copy of Hitler's Diaries (which contain a nasty secret about the US president).
In short, the Dillon series has run its course and the author has nothing new to say about either the characters or the genre he so expertly mastered in the past. Mr Higgins needs to develop some new ideas before he pens another novel (preferably with a new set of characters).