It's Billy's best friend's birthday, and the Mini Monsters have come to the party too! Gloop gets mixed up with the jelly, Fang-Face is after the cake and Trumpet's been swept away by a balloon. Billy can't save them all on his own, but who can he turn to for help?
Packed with colour illustrations, comic strips, maps and speech bubbles, with an action-packed plot, to appeal to even the most reluctant reader.
Packed with colour illustrations, comic strips, maps and speech bubbles, with an action-packed plot, to appeal to even the most reluctant reader.