How does having a partner change or affect Shane Scully, who often works alone?

At first, Sumner Hitchens rubs Shane the wrong way.  So even though Shane is assigned to work with him, he’s still going off on his own.  Hitchens is doing the same thing, but eventually there are outside forces that push these two guys closer and make them work together. Hitchens is a funny guy at times, so he lightens things up for Shane, and Shane makes Hitchens see the serious side of police work. They start out as the Odd Couple, and end up as….well, you’ll have to read the book to find that out.