Narga the sea monster (beast quest #15: the dark realm)

Step into the Dark Realm--home to the most dangerous Beasts yet!

After all of their adventures so far, Tom and Elenna are more determined than ever to make theur way through the Dark Realm and defeat the Evil Wizard Malvel.But within the perilous Black Ocean lurks Narga the Sea Monster. Aside from preying on the rebels, Narga is holding Sepron the Sea Serpent hostage. Only Tom and his friends can bring an end to this evil Beast's reign.