A new trailer for Netflix's new documentary about the Yorkshire Ripper has shown how the victims were ignored by police.
Four-part series The Ripper, which streams from December 16, tells the story of how Peter Sutcliffe murdered 13 women and attempted to kill seven more from 1975 to 1980.
The trailer sees policemen questioning if they could have done more for the victims, as a voice said the police had been excluding evidence.
It showed how Sutcliffe had begun by murdering prostitutes, which those in the trailer said meant the public didn't take the threat seriously.
The women were killed in similar ways to those murdered by Jack The Ripper, the Victorian serial killer that was never caught and who also killed prostitutes.
But when he began murdering women who weren't sex workers, it was said that no woman was safe from him.
Women who were interviewed by TV cameras at the time said they felt police would never catch him.
The series will feature interviews with senior police officers, journalists and family members who were involved and affected by the killings.
Sutcliffe murdered Wilma McCann in October 1975, Emily Jackson (January 1976), Irene Richardson (February 1977), Patricia Atkinson (April 1977), Jayne MacDonald (June 1977) and Jean Jordan (between September and October 1977).
He also claimed the lives of Yvonne Pearson between January and March 1978, Helen Rytka (January 1978), Vera Millward (May 1978), Josephine Whitaker (April 1979), Barbara Leach (September 1979), Marguerite Walls (August 1980) and Jacqueline Hill (November 1980).
He is also known to have attacked at least nine other women before his arrest in 1981.
The killer died from coronavirus last week, aged 74, while serving a whole life sentence.
He had refused treatment for Covid-19 at the University Hospital of North Durham, three miles from the maximum security Frankland jail where he was an inmate.
*The Ripper will air on Netflix from December 16
