Murder Road by Simone St James

Ingeniously plotted and heartstoppingly terrifying, are you ready to uncover the secret of Murder Road? April and Eddie have taken a wrong turn. They're on a long dark road, late at night, and they see a woman up ahead, clearly in trouble. They stop and pick her up. It's only once she's in the car that they see the blood. And then they see the headlights - far in the distance, but coming up fast. And at last, terror in her eyes, the woman speaks.