A group of terrorists posing as plumbers set up base at a school for the blind. The students remain blissfully unaware while the terrorists plan the assassination of a politician who will soon be passing the school on a parade route. Only one student, Sally, suspects that the men upstairs may be dangerous...
| Directing | Shaun O'Riordan | Director |
| Writing | Brian Clemens | Writer |
| Writing | Terence Feely | Writer |
| Production | John Sichel | Producer |
| Sound | Laurie Johnson | Music |
| Editing | Glen Cardno | Editor |
| Art | Terry Royce | Props |
| Sound | Bob Woodhouse | Sound |
| Costume & Make-Up | Marie Roche | Makeup Artist |