Element Girls 2: The Stolen Star - The Element Girls, #2

Long ago, a star went missing from the western sky. Legend says, the star was taken to the troll's home, a mountain only seen at sunset. Legend says, the four elements are the only thing that can save the star. After an intense beginning of the year where Tess (Fire), Amelia (Water), Susie (Air) and Elizabeth (Earth) discovered their element powers and freed a goddess, the Element Girls are looking forward to their summer vacation in Iceland.
But Amelia's father, an ex-sorcerer who used dark magic, is with them. Has he really forgotten how to do magic, or is he just pretending? The myth of the stolen star, and the four elements that can save her, draw the girls deeper into a mystery full of magic.