A vampiric adventure on religious background.

Here is a very good book full of good feelings.
The story is quite complicated to explain without revealing too much of elements (spoilers).
Let's try!
In the first century AD, a Roman legion encircles a Christian stronghold that knows sentenced.
A religious soldiers accompanied by seven cuts out a pious object in a tomb containing a young girl sacrificed.
Today, Erin Granger and his students explore an archaeological site in Israel when things get complicated following a earthquake that partially revealed the remains of the ancient tomb at sixty kilometers away.
Helicopter to the place of the disaster, it is facing a strange priest Rhun Korza.
There, she met Jordan Ranger sergeant operating in area with his small team of military technicians.
Determined to penetrate the bowels of the mountain, they will go from discovery to adventures ...

Both say right away that history is written by James Rollins and well constructed story, full of twists.
With the protagonists traveling everywhere, looking for a mysterious object saint coveted by a competing team led with an iron hand by the ruthless Báthory, a descendant of a noble Hungarian family in the past overshadowed by stories of carnage, bloodthirsty massacres in the seventeenth century ...
Thus, Israel Lands, the trio formed by Jordan, Erin and Rhun will travel to Germany, then in Russia and the Vatican to continue a holy mission they seem to be elected.
In this book, it comes to repentant vampires (the sanguinistes) fighting strigoïs, creatures without soul.
The pace is fast enough with a reckless US military, a passionate archaeologist and a priest with a troubled past sanguiniste but devoted to his cause.

Finally, a very good novel at Rollins sauce whose sequel is scheduled for November 2015 (yes, it will be a trilogy).