Zac Power #4: Frozen Fear: 24 Hours to Save the World ... and Get Home for DinnerPaperback, 28 October 2008

Zac is sent to the Great Icy Pole to investigate suspicious activity in the area. It's a freezing, scary place where your eyeballs can freeze in their sockets and your fingers can snap off! And if Zac misses his helicopter ride back, he'll be stuck there all winter. . . .