Beast Quest: Nixa the Death-Bringer: Series 4 Book 1 by Adam Blade
Taladon the Swift has returned! But to Tom's horror, his father is a ghost. To save Taladon, Tom must battle the Ghost Beasts and collect the pieces of the shattered Amulet of Avantia. First is Nixa the Death-Bringer - will her deadly disguises lure Tom to his death?