With his hand trapped in the door of a speeding car, a man struggles to remain upright as he's dragged along a deserted Phoenix road. As his remains grow cold, the killer embarks on a grisly murder spree that takes him across the Southwest. A hundred miles away, Ali Reynolds is grieving -- both for the loss of her career and for the cheating husband she once thought she knew. When an old friend calls to claim a long-overdue favor, Ali finds new purpose...