Flowers for the Dead

After a devastating car crash wipes out her family, Laura struggles to get her life together. Grieving, she becomes forgetful. She doesn't remember how money got into her purse, or buying that pint of milk . . .
Adam is the perfect boyfriend. He cooks meals. He does the housework. He looks after Laura's every need. He knows everything about her.
But Laura has never met Adam. And she knows nothing about him.
What turned him into a monster who stalks his victims? How did he become warped from a sensitive boy who adored the fairy tales his gran read to him? And what is he trying to say with the bouquets he sends?