After reading the Hell on Earth Corebook you maybe thinking that the templars are one of the less powerful character types. And if you were to only use the corebook you would probably be right. But if you add this book with it you will certainly even up the odds of a Templars to all other classes rather shortly.
The book oral history is recounted through Jo the templar who is one of the best characters in the game and who graces the cover, and makes a great commentary. The book contains more of the powers of the templars and recounts the previous ones in the core book. It contains the blessing of the martyrs and how characters can spend fate chips to gain the upper hand. It also contains a new playable class, but mostly a way to make really bad npc class the anti-templars. The book contains a really get adventure in the back to run. Though it is really a hard one that will probably send a player or two to boot hill. All over a great book and one of the easier ones to get a hold of.