Battle fearsome beasts and fight evil with Tom and Elenna in the bestselling adventure series for boys and girls aged 7 and up. Fearsome Trema lurks in the bowels of the earth, only emerging to feast on his prey. If Tom is to defeat the Beast and lift the curse on Freya, the Mistress of the Beasts, he has no choice but to brave the underworld. But a terrible shock is waiting for him above ground... There are SIX thrilling adventures...