"Good material for RPG players"
I finished the book and just now found the audiobook for it.
This is a good book for people who grew up reading X-Men. It is a good source book for those who play role-playing games like d20 Modern. The twists in the story are good, though perhaps expected. It doesn't go into details about the biology of the mutants. But it does go deep into the relationship of police officers and how their work affects their life. I look forward to the sequel.