First broadcast 25th October 1969.
Everybody is rushing to be ready for the Fenn Street open day when Hedges realizes he knows nothing about the event.
John Alderton - Bernard Hedges
Deryck Guyler - Norman Potter
Noel Howlett - Mr. Cromwell
Joan Sanderson - Doris Ewell
Richard Davies - Mr. Price
Erik Chitty - Mr. Smith
David Barry - Frankie Abbott
Peter Cleall - Eric Duffy
Peter Denyer - Dennis Dunstable
Liz Gebhardt - Maureen Bullock
Malcolm McFee - Peter Craven
Penny Spencer - Sharon Eversleigh
Suzan Farmer - Judith Howard
Kristin Hatfield - Pupil
