Graham Masterton 
Sweetman Curve [EPUB ebook] 

A journalist is caught up in a deadly game of cat-and-mouse with a random killer when his father and girlfriend are killed. After investigating he uncovers a further ten people with nothing in common except they all appear on The Sweetman Curve, a graph invented by a corrupt university professor which can predict medical life expectancy within a three year bracket. Unfortunately, the graph has fallen into the hands of the wrong people, one of them being a corrupt senator who has powerful financial backing.