I read this after reading Timberwolf, and it gave me more background on the Infinitium connection and how it all affects the people involved.
I enjoyed John's character in Timberwolf and was glad to see more of his background in this prequel. I hope he stays in the series as a main character,
He's super loyal to his sister, and they have a great relationship.
Reading about his relationship with Mason & Grace was so sad, he missed his chance and had to watch from a distance. I have to say that I do not like Grace at all, it felt like she just kept him dangling throughout the years and I'm so glad the story ended the way it did, she did not deserve him at all.
I'm really enjoying the series and will be continuing so I can find out how all these different parts come together and who might be behind it all.