(W) Stuart Moore (A) Andres Guinaldo (CA) Jae Lee. Written by STUART MOORE Penciled by ARIEL OLIVETTI Cover by JAE LEE "Royal Blood" concludes! In the dark* hidden city of the underwater vampires* Namor fights the Highlord for the survival of the Atlantean people! But once he knows the vamp's secret* can Namor bring himself to finish the job? A turning point for Marvel's first mutant* guest-starring the X-Men! 32 PGS./Rated T+