Donna and Derek Brown started life as close as any siblings – living together, playing together and growing up together.
But with 10 other brothers and sisters and an absent father, their upbringing was far from normal.
Many of their younger years were spent in care homes across Preston, the forgotten victims of a childhood filled with neglect.
And as Donna grew older, she began to notice something strange about her older brother Derek.
His behaviour became more and more violent and he would take great pleasure in hurting people and laughing about it.
As they got older, it got worse.
It was eventually to set them off on very different paths in life.
Today, mum of four Donna (now Mansfield) is happily married and living a quiet, unassuming life with her husband Fredrick Mansfield and two of their young children.
A doting mother and grandmother, in so many ways her life could not be further from that of her now infamous brother.
For he is now etched in British history as one of the country's most evil and notorious killers.
Derek Brown was this month jailed for life for the brutal murders of young mothers Xiao Mei Guo, 29, a DVD seller, and Bonnie Barrett, 24, a sex worker, whom he picked up in Whitechapel, east London.
"It didn't surprise me because of what he was like in the past when we were children," says Donna.
For the full story, see Friday's Lancashire Evening Post.
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