The Shadow Siblings, Book One

Two siblings that kill people for a living, plus one cowardly former guard who can trace magic equals a minor--make that major recipe for disaster.
It starts off simply enough, but things take a turn for the worse after the Shadow Siblings meet with the infamous Mr. Bonilla, whose plan to make money is not in the two's favor.
Needless to say, they are later joined by Ira Hawkins, who does not favor this particular ride of adventure.
As the threat of the Shadow Army looms over the now trio, what are they supposed to do?
Join the siblings (and Ira) on an adventure where everyone deals with their emotional issues in all the wrong ways!