Due Date, livre audio

This week is going to turn Nina's life upside-down.
Returning home from work, she discovers her door ajar, signs of a struggle, and her pregnant wife, is missing.
The kidnappers call. Issue a ransom, and she gives in to their demands, follows their instructions to the letter. But it becomes increasingly clear that this kidnapping isn't about the money, isn't about her or her partner.
It's about the impending due date.