Paris - Sebastian Rook

Jack wants to believe that the vampires are gone, banished for a
thousand years by a ritual that sent their leader to the depths of
Hell. But he isn't sure. The voice of the vampire god still echoes
in his mind, promising to return. Jack's friends Ben and Emily
say it's his imagination, but it seemed so real. Also, Victorian
London is safe -- but a strange sickness is raging in Paris. A
familiar sickness, that leaves its victims drained of blood. Jack
believes the vampires have moved on, and that he, Ben and Emily
must follow them...