Sam and Nick are back from their honeymoon, and things just aren't slowing down. Throw in the side characters - friends and co-workers of both Sam and Nick - pairing up and dealing with their own problems and issues, and you have a beautifully thought out world that is as intricate as real life.
The side story that impacted me the most this time was Jeannie dealing with some pretty serious trauma that happened in the last book. She's such a strong character, and she almost stole the show.
Meanwhile, Sam is trying to solve a series of murders, and we get to see the whole crew from her department in action again. They work like a well-oiled machine tracking down leads and pulling the threads (as Sam likes to say) until they find that one vital piece of information that breaks the case wide open - to a surprising conclusion.
I love Sam and Nick, and they are one of my favorite couples, so I'm glad to see the series continues for many more books still.