" IT SIMPLY ISN'T ON TO GIVE AWAY FOURTH - FROM  SECRETS ?"

This term the fourth - formers are busy planning for the school Christmas concert , but that doesn't  stop them plotting tricks too ! Susan is supposed to be in charge  of the play but bossy sylvia wants to take over , and new teacher Miss Tallant seems suprisingly  knowledgeable about all of their plans. could there be a spy in their midst?