Zack Files 09: the Volcano Goddess Will See You Now (The Zack Files) (Book:9)

Hawaii. Dream vacation. Same thing, right? Wrong! No sooner do Zack and his dad arrive at their hotel does strange things start happening to Zack. First he gets bonked on the head by a falling coconut, then the T. V. blows up, then he gets thrown off of the treadmill in the hotel spa. Zack appears to be cursed. Could it be the piece of lava rock he bought in the gift shop?