Research, as many writers have found to their cost, can be as dull as ditchwater; the trick then is to cobble it together to make a readable story. No problems with Messrs Selby & Campbell, there - their account of the raid on the Antwerp Diamond Centre in 2003 where a gang known as `The School of Turin' appropriated diamonds, other precious gems and cash, worth anything up to $½ billion, is masterly.
The writers' style has the reader literally on the edge of his or her seat; and like many criminals who possess iron discipline when a crime is in progress, they describe how the discipline evaporated once the prize had been gained and of how the gang left a rich picking of clues which brought about their downfall.
It begs the question: does crime pay? That's a matter for the individual reader who, I guarantee is going to be swept along by the prose. Read the book - you won't be disappointed.