Corrected entry: In episode 4, the Doctor Who producer at this time (John Nathan-Turner) can be seen passing behind the telephone box as the Doctor is consulting the phone book. (He's the one wearing a sheepskin coat). Nathan Turner wandered into the shot while he was "shooing" away "rubberneckers" who had gathered to watch the filming. Nathan-Turner subsequently claimed that his appearance in this Doctor Who story was a deliberate Alfred Hitchcock-style cameo...but was it? It could have been simply Nathan-Turner trying to 'cover up' the mistake.