"Colloids" by Fitzpatrick is a fascinating book that tells the story of the late 19th century about cowboys and preachers who travel across the boundless prairies of America to lead to holiness of soul and repentance. The action unfolds in an atmosphere of mystery and uncertainty when the main character, a cowboy with a hidden secret, meets a mysterious priest who forces him to become the face of revolutionary change. This book is a deep reflection on the faith, power and inner reincarnation of the heroes in the world of fierce struggle for survival and destiny.