Lizzie is burdened by the secret of Ethan's past, but should she tell him? While Lizzie struggles with her moral dilemma, the rest of the gang get excited at a huge opportunity - the Headmaster is leaving the school premises to tour the schools he intends to hoodwink into joining the Hazelbrook Academy chain. With the Headmaster away, the gang will play - but how?

The gang get excited that they're not alone - someone else knows about the Headmaster! They hope that rescue is on its way, but their search for whoever left the message is fruitless - until a mystery teacher with attitude shows up. Who is she?