Seventh Son, based on a novel, is a fantasy movie about an apprentice and his master killing dark creatures and witches.  It is fast paced, filled with CG action, but with mythology and character backgrounds reduced to a minimum.  It is quite entertaining, but I’m not sure it is good enough for the remaining dozen books to be adapted.  The ultimate villain dies too easily.  It reminds me of the Percy Jackson series, although the latter allows more time for story and feels more like an adventure.