Good book, decent story line, good characters

Suspenseful, but a good love story too!
The hero and heroine are destined to be together in spite of the odds... You can't help but care about Rex and Hannah - they were torn apart by events of the past, now they are forced to work together to expose a terrorist secret that threatens the world. But in working together, they must face each other and confront their pasts. Hannah must tell Rex her secret...