||A walk down the aisle, a resort hotel, a drink on the beach... for these unlucky couples, the honeymoon's over. A newlywed couple steps into the sauna in their deluxe honeymoon suite -- and never steps out. When another couple is killed while boarding their honeymoon flight to Rome, it becomes clear that someone is targeting honeymooners, and it's anyone's guess which happy couple is next on the list. FBI Agent John O'Hara is deep into solving the case, while Special Agent Sarah Brubaker is hunting another ingenious serial killer, whose victims all have one chilling thing in common -- their name. Investigating in the Caribbean, O'Hara is assaulted by the sunny, sparkling world of newlyweds in love -- don't they know there's no such thing as happily ever after? That's what he learned when his wife was killed by a drunk driver two years ago. And now her killer is about to be released on parole. As O'Hara and Brubaker get closer to catching the newlywed murderer, all O'Hara can think about is the end of his own marriage -- and how sweet revenge would taste.