Spirit Fighter (Son of Angels, Bk. 1)

What if Nephilim - the children of angels and men - still walked the earth? And their very presence put the entire world in danger? In Spirit Fighter, Jonah and Eliza Stone learn that their mother is a Nephilim and that they have special powers as quarter-angels. When their mom is kidnapped by fallen angels, they must use those powers to save her. Along the way, they discover that there is a very real and dangerous war going on between good and evil and that God has a big part for them to play in that war.