"Ady were a prelude to my future.Like a one-minute trailer to a film - a taste of what was to come ".

I think that this sentence is a foreshawdowing of the whole story. Ady shows Manny the way of life,that Manny wants to live. Ady is free and he hasn't got the problems in his family like Manny has. Manny wishes that he could live a life like Ady.Manny knows , that he will have a life like Ady has.