Reckoning — Ian Barclay

Ten American oil experts kicked out of Iran. Ten wanted men on a hit list stretching clear across the globe. They've stared dying one by one, within weeks of each other, the mode of murder different in every case. The kill count stands at five down, five to go. It's a case of international petroleum politics and its dirtiest and bloodiest. The big energy conglomerate doesn't want to pay the million, but it knows it has to. Because only Richard Dartley, the world's most expensive assassin and the man who never misses can beat a professional terminator every bit as deadly as himself.