SOLVED. Bound by blood in some way [s]

[Kris]

Kate, I moved your request to the Unsolved folder because you're looking for a specific book series.

What year did you read these books?

Are they for young adults/teens or older adults?

[Jayme]

Other than traveling through shadows, were there any other supernatural elements? You say bound by blood...such as 2 different families or were there vampires?

[Daffodil]

Blood Bound by Rachel Vincent

Copied from an Amazon Review:

"Never tell anyone your full name. Never leave behind a drop of your blood. Because if you do, they will find you.

Always keep the lights on. Banish every shadow. Because no locked door can keep them out.

The Skilled have been around for years, and those who are the most powerful are bound to one of the two powerful crime families that control the city.

So, unless you are extremely careful, incredibly lucky or exceedingly wealthy, they can see you, they can track you, they can instantly travel to wherever you are, they can blind you and they can bind you.