The Bloodline - James Roberts - Bog

Marissa's saga continues when her banished vampire sister Kali returns to retrieve their family's Bloodline book.
The Bloodline holds the secrets of the Demetri vampire clan, as well as who is next in line to rule. When the two sisters meet its a struggle for power, but in the end; only one can rule.
The only outcome that can be certain is that blood is going to flow...