 Helen causes a stir by wanting to play in the staff-versus-pupils cricket match, but the female staff also want a stab. There are repercussions from the radio sit in, with the ringleaders called together to hear Mrs. McClusky s views. She tells them that the whole system was in review, irregardless of the sit-in. Freddie does a fake Mr. Mackenzie broadcast on the radio, claiming the radio campaign was a success. Intending to hold an engagement party for Zammo and Jackie in the school canteen on Saturday, Fay and Julie sweet-talk Mr. Griffiths into believing they are holding a party in his honour, so he will open up the school. So as to give Cleaver another scare, Gonch plans a trick involving the "Grange Hill Ghost". They cut out a hole into a wall in the den, with Hollo hiding behind, and tell Cleaver that they are going to root out the ghost with the help of a vacuum cleaner. Trevor starts hoovering the walls - and a terrifying scream comes out. The bricks come away from the wall, and an arm grabs Ziggy - Trevor runs off in terror, running straight into Mr. Scott.