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? An exciting addition to Young Reading Series Two, for readers growing in confidence.

Zanna writes fiction and non-fiction for Usborne. Her favourite things to write about are small monsters and talking animals. She used to live in London but now lives in a cottage on the edge of some woods. She is only sorry there are no bears or witches in them.