When Adam meets Vincent, another Immaculate who almost beats him, he begins to doubt he has the strength to defeat the First Father. Then he is stricken by a mysterious illness, and the only doctor who might be able to save him turns out to be his twin brother, Matthew. To hide them from the First Father, both boys were adopted into human families. Adam with an abusive minister, who saw him as the devil's spawn, a weapon to be trained and used to rid the world of a greater evil, while Matthew was raised in a loving home, but who suffered because he did not realize he was a vampire.
Vincent returns. Though Adam is desperately ill, he tries to fight him. It is Mara who proves the key to saving him for it is Mara's blood, poisoned by Edrick, that has made him sick in the first place and it is her magic that heals him.
Having defeated Vincent, Vincent reveals that once he was thought to be the fulfillment of the prophecy and failed, ending up as a servant to the First Father. Now Vincent offers to help Adam and Matthew defeat the First Father, and despite not trusting him, they agree.
Where The Darkness Therein created little in the way of a vampire society, The Immaculate creates a complex world of half breeds, Immaculates, and even goes on to talk of space aliens and Atlantis, as well as magical spells that change the course of the universe. It is a very interesting world.
As with The Darkness Therein, it definitely falls within the strict formula of a paranormal romance, but this story is very different from its predecessor, although characters that appeared in the first, appear here as well. I greatly enjoyed both books and am looking forward to the third in the series.
