The Heroes Organization: Wrath of Darkness

''This is the second book in the Heroes of Olympus series. Written by MattShadow. Guest appearance by Matt, his servants,(Xylia Aven and Ever Rivercorw). '''A mysterious new force with enemies made entirely out of Shadows and Darkness attack Kate and the rest of the HoO. Along with others who are being attacked, they must fight these devastatingly powerful enemies and find the truth about why this is happening.'''