A great thriller with a historical reference

This is the first book I read Deric Giacometti and Jacques Ravenna, this book keeps us in suspense. I enjoy these adventures Indiana Jones with a historical reference. The pace of the chapters is cut, the narrative of an adventure with historical characters related to the investigation today is great.
Some minor drawbacks: words like iPhone or FB (Facebook) and big words bothered me for a novel ... Anyway.
The beginning is a little confusing, since we quickly pass on the presentations of the characters, it seems to take history by the way.
I was mostly lost with historical figures, because I read the book over several days, and sometimes I was thinking thin is that it already?, A Templar? an inquisitor? then it breaks the suspense since we do not know who it is. Maybe some subtle reminders of their role would not be too much, ah unless I take playing notes ...
Anyway I recommend it, and I'll read novel else these authors with lenquêteur Marca.