Ray Lester is a fixer in the boxing business.

He makes fights happen. He builds a bridge and guides boxers across to the negotiating table. Ray Lester is good at his job.

One morning, a girl arrives at Ray's door and asks him for help finding her father, an old-school Vegas crooner called Eddie Lights. Ray travels with his questions to Sin City, along with 30,000 other Brits with their Union Jacks on the way to watch Hatton take on Mayweather. But the boys in leather jackets from back east are on his tail and Ray finds himself embroiled in a murderous plot.

So begins a journey into the murky world of deals, fights and fighters. A world beyond the glitz, glamour and glory. A world where the fixer is king.