This book actually contains two different storylines that tie together. The storyline with Worf is good, but I felt the second storyline within the holodeck was too detailed, spent too much time there. I think the book would've been better if the holodeck portion was cut in half and the Worf portion expanded.
As a Klingon fan, I'm always eager to read more on Klingon culture. This book was not a disappointment in that regard, or even in any regard. I found some faults with the way I think Worf and Alexander would behave, but another reader might not. There are some great scenes with Cpt. Picard and Alexander. Overall, I enjoyed the story and would recommend this book.