Hinchcliffe's agent and contacts from his time as a script editor won him the position as the new producer of the BBC's
Doctor Who. This horror influence is especially evident in serials like
Planet of Evil,
Pyramids of Mars,
The Brain of Morbius,
The Hand of Fear and
The Talons of Weng-Chiang, all of which have content which directly recalls well known horror novels and movies. Hinchcliffe also aspired to give the programme a more literary feel with a stronger science fiction basis. Working closely with Holmes, Hinchcliffe tried to "tighten the whole storytelling up a bit and pay more attention to the design", but he conceded that it was improved "in some stories more than others". As part of the effort to "tighten" the storytelling they were permitted to reduce the number of six-parters to just one a season (the previous team of Barry Letts and
Terrance Dicks made three six-parters per season in their last three seasons). Hinchcliffe was reluctant to use characters and monsters from the series' past: the
Daleks, the
Cybermen and the
Sontarans only appeared once during his tenure, and these stories were commissioned by Barry Letts.
The Master and the
Time Lords returned for one adventure,
The Deadly Assassin, at the suggestion of script editor Robert Holmes, but were portrayed very differently from their previous appearances. The character of
Brigadier Lethbridge-Stewart and the
United Nations Intelligence Taskforce made their final regular appearances in Hinchcliffe's second season. The early Tom Baker era of the series is cited by
Screenonline as the peak of
Doctor Who in its first run. However, the BBC received several complaints from
Mary Whitehouse of the
National Viewers' and Listeners' Association that the series was unduly frightening for children and could traumatise them. The NVALA had been critical of the series before but the complaints reached their height in the Hinchcliffe period. Her strongest criticism was for
The Deadly Assassin, where an attempt is made to drown the Doctor at the end of an episode. While the BBC publicly defended the programme, after three seasons Hinchcliffe was moved onto the adult police thriller series
Target in 1977, and his replacement
Graham Williams, who had created
Target, was specifically instructed to lighten the tone of the storylines and reduce violence. Screenonline states that this resulted in "the start of an erratic decline in both popularity and quality" for
Doctor Who which led to its eventual cancellation. ==Subsequent career==