THE FOURTH DI HELEN GRACE THRILLER BY BESTSELLING AUTHOR M J ARLIDGE 'Helen Grace is one of the greatest heroes to come along in years' JEFFERY DEAVER In the dead of night, three raging fires light up the city skies. It's more than a tragic coincidence. For DI Helen Grace the flames announce the arrival of an evil she has never encountered before. Because this is no firestarter seeking sick thr...