This book takes a bit of a unique view of Porphyria and the role it plays
on humans, and vampires alike.

There are a few rare humans that are affected with the disease Porphyria. Though even
rarer there are humans affected with the disease where it mutates. In these humans the
disease becomes active at a rapid pace. It then mutates, the person dies to come back 
different. They will become one of three types of vampire, a Predator, a Natural or a 
Craven.  Predators are those that think it is a vampire's innate right to kill whenever 
they choose. They also are the most dominants of the three, and the businessmen of the
vampire society. They are the ones the Naturals must come to for their life-sustaining
blood.  Naturals choose to live and work as a normal human, or at least as normal as
they can. The Craven are the sick and diseased of the vampire society, they must live
off the generosity of the Naturals as they won't find any from the Predators.

Mentor is just what his name suggests. He is a mentor to the young in order to help 
them through their deaths. He tries to help them towards the path of the Natural, but
in the end it is the choice of the individual as to what he comes back as. Though 
reborn a predator himself he has through many trials and tribulations been able to
suppress his natural instincts. 

Our story is basically of a teenage newly reborn Natural by the name of Dell and
the trials she must face. Dell must learn to deal with her urges to run free and kill,
the fact that she must drink blood and going to school. All these things she must try
to do without betraying what she is.

Other facets of our story include a very rich human with the normal type of Porphyria
that hires someone to find a vampire to turn him, a woman who gets involved 
accidentally by trying to trace inconsistencies at a blood bank and a very 
greedy predator.

While I found some parts interesting and some mystery was involved I found it
a bit of a slow read and hard to stay with.  Some areas I found somewhat predictable.