The Sweetman Curve Graham Masterton

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.

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