Good Brother Book Review

In Peter Markus' book Good Brother we are introduced to two characters that function as one. Jimmy and John, known to the reader as "brother" share a bond that almost makes them seem like one person. My belief is that they are two bodies of one mind. Maybe the two make up one person. Or maybe Markus is trying to fool the audience into believing that two people exist where there is only one.
Not only does the reader question the existence of two brothers, there is also the question of who or what is girl? Is she real? Is she imaginary? Or is she just a pile of mud?
Brother(s) love mud.
Good Brother takes us into a world that some can view with extraordinary events sometimes taking place. It is these extraordinary events that sometimes take the reader out of the real world of the book and take them into a world that one would think is only real to the brothers. The fanatical stories transport you to a smelly fish town with mud everywhere in which the brothers live a life where it seems their world and the real world collide.
While reading this book, think about how two separate minds can be so in tune with each other, that their lives seem to mirror that of one person. What is girl? Is she real? And are we infact in an alternate reality?

In this book Markus lets us visit this seemingly fanatical world, but does not let us into his characters minds completely. We are only visitors with a limited view and only alloted a small  window of time to stay there. There are things that we don't understand but as a guest we are not supposed to, like the brothers and girl. We can take things at face value or try and read more into them, but which one is a seemingly right interpretation?
All we know is that in the world of brother(s) there exists girl and mud.