This was a fast read. The plot moved quickly with all of the action taking place in a span of just over 12 hours.
The setting was well done, and as a main character Sara was strong and well developed. The other characters needed more depth to really bring them to life--especially those who were integral to the plot, like the missing husband Brian and the villain.
My big problem with this book was the total unbelievability of how the police acted. Three kids kidnapped, the mom missing and from the way this story read it was pretty much two detectives bumbling around on their own. One of those 2 detectives was more of a caricature than a character, although I don't remember it being it mentioned I picture him wearing a rumpled trench coat, ala Colombo. DJ was better drawn; he was more believable with the right level of concern and ability to sort through what was going on--right up until the end when his actions took a turn totally at odds with any police how-to manual. It was just too weird. I kept asking myself, "where is the Amber Alert? Why are they not getting the word out that these kids are missing???"
I liked the plot idea; the "game" was well thought out and made for an interesting storyline. For me, this book would have been so much better if the police just had not been involved at all if they weren't going to be doing anything believable. More time could have been spent on the loose ends of the other characters backgrounds and less time on the totally farcical way the police handled this kidnapping. That was too much of the book and made it a total miss in the end.