College student Sarah Richards is alone in fearing and disliking the new teaching machines but even she does not foresee the terrifying situation that arises when her supervisor, Stephen Kershaw, re-arranges the machines to conform with revised fire regulations.

Mark Eden
as Stephen Kershaw

Deborah Watling
as Sarah Richards

Sara Aimson
as Freda

John Allison
as Geoffrey Harrison

John Baskcomb
as Eric Lonsbury

Erik Chitty
as Dr. Hammond

Noel Davis
as Davison

Susan Field
as Mrs. Richards

Kenneth Gardnier
as George

Nadine George
as Florrie