Acheron Highway — Gary Jonas

The dead won't stay buried in Denver, so Jonathan Shade isn't too surprised when a deceased woman shows up wanting to hire him. A necromancer stalker has stolen her heart--literally--and she needs it if she's going to live.

But Shade's jobs are never simple. The dead won't leave him alone. They work for a lovesick goddess who wants Shade to turn over her former lover. Chased by zombies, and then by an army of skeletons, Shade and his magically-engineered partner, Kelly Chan, fight to stay alive.

Keep your hands and feet in the vehicle at all times, and hang on, because there are no safe exits from Acheron Highway...