Complex sentence: One of the last known descendants of the Grimm line and a Portland homicide detective who after learning of his destiny he decided not only fulfilled it; but also lead him to lead a dangerous double-life between the supernatural and his personal life.
Split into simpler sentences: One of the last known descendants of the Grimm line and a Portland homicide detective. After learning of his destiny, he accepted it, and it lead him to lead a dangerous double-life between the supernatural and his personal life.