This episode uses the wrong combination of audio and visuals for the opening credits. The 30 second version of the opening theme (run in tandem with the full length version since Season 3) is played, but against the visuals for the full length opening. This not only causes a mismatch of visuals and sound effects, but the opening also cuts off abruptly (as the subway train passes) when the theme tune ends, meaning the on screen title and Edward Woodward's credit are never reached.