Keeper Of The Bride by Tess Gerritsen

Your day starts by being jilted at the alter. It's about to get a lot worse.

If Nina Cormier's wedding had taken place, she would be dead. But after the bride was left at the altar, the church stood empty when the bomb exploded. It wasn't until a stranger tried to run her off the road that Nina realized someone actually wanted to kill her.

But who?

That's what Detective Sam Navarro has to find out…fast. With a nightmare unfolding all around them, Sam and Nina must try to decipher the terrifying truth: they at the mercy of a brilliant madman, one who is playing for keeps…