I knew from the first page that this was going to be a great story; sadly this was because the writing was so poor it wouldn't have made it to print if it wasn't! It's not terrible writing (12k readers gave the book an average score of 3.8/5); it's just all plot with no imagery, very little description, and no concept of 'show don't tell'. It's also written in the present tense and seems to switch between third person omniscient and third person limited (sometimes we know what a character is thinking and sometimes we don't). I found the use of the present tense annoying, but as the story moved on I got used to it and I just wanted to know what happened next.
In the opening chapter, Anne and Marco leave their baby at home while they attend a dinner party next door. They take the baby monitor and pop back every 30 minutes to check on the baby. When they finally arrive home at 1:30am, the front door is open and the baby is missing. The police suspect that Anne and Marco have either killed the baby by accident and they're trying to cover up, or they've arranged a kidnapping in order to secure money from Anne's wealthy parents. Anne's recent battles with post-natal depression and Marco's financial problems don't help their case.
Thankfully, you don't have to wait until the last 30 pages to find out what happened to the baby; that's revealed about half way through. The plot has lots of twists and turns; some parts of the ending surprised me and others didn't. Overall, I enjoyed the book. That said, I wouldn't rush to buy another by the same author. Below is an excerpt to illustrate the writing style:
"Anne has a complicated relationship with her parents. When Marco and Anne are having issues with them, which is frequently the case, Marco tells her that her relationship with them is f****d up. Maybe it is, but they are the only parents she has. She needs them. She makes things work the best she can, but it isn't easy." (p.32)