First broadcast 13th November 1971.<br /><br />The headmaster gives Potter permission to advertise for an assistant.<br /><br />Deryck Guyler - Norman Potter<br />Noel Howlett - Mr. Cromwell<br />Joan Sanderson - Doris Ewell<br />Richard Davies - Mr. Price<br />Erik Chitty - Mr. Smith<br />Richard Warwick - David Ffitchett-Brown<br />Derek Griffiths - Sidney Noakes<br />David Howe - Colin Lovelace<br />Roderick Smith - Philip Larch<br />Bruce Hodgkins - School pupil
