On April 3, 2010 in Manchester, England, 12-year-old, Tia Rigg's uncle, John Maden phoned her mother, Lynne, to ask if Tia could come over to babysit his young daughter. Lynne agreed, and Tia went to John's home, hoping to catch some of the football game that day, as her favorite team, Manchester United, was playing but she had no idea what awaited her at her uncle's home. John drugged Tia before raping her, committing a variety of sexual acts on her, and then stabbing and strangling her to death. 

Social services had many chances to take Tia from the care of her mother, Lynne, as Lynne had a history of drug abuse, suicide attempts, and domestic violence, however, they failed little Tia. 

Sources:

True Crime England. (2020, February 4). The Murder of Tia Rigg. Retrieved from: https://truecrimeengland.wordpress.com/2020/02/04/the-murder-of-tia-rigg/

Daily Mail Reporter. (2011, May 13). Murdered girls' addict mother to sue council for not taking her into care. Retrieved from: https://www.dailymail.co.uk/news/article-1386614/Tia-Rigg-12-raped-murdered-uncle-Child-Protection-Register-born.html

Riches, Chris. (2010, April 5). Mother's horror as she finds daughter, 12,stabbed and strangled. Retrieved from: https://www.express.co.uk/news/uk/167227/Mother-s-horror-as-she-finds-daughter-12-stabbed-and-strangled

Press Association. (2010, October 4). Tia Rigg tortured and murdered by uncle obsessed with child porn. Retrieved from: https://www.theguardian.com/uk/2010/oct/04/tia-rigg-murdered-by-uncle

Tozer, James. (2011, May 13). 'I've finished killing her now': Uncle, 38, murdered niece, 12, while acting out a fantasy from his collection of violent porn. Retrieved from: https://www.dailymail.co.uk/news/article-1317626/John-Maden-raped-murdered-niece-Tia-Rigg-acting-internet-porn-fantasy.html

Audio:

Daily Motion: https://www.dailymotion.com/video/xioost

DCI David Warren: https://youtu.be/rM1WG-37gj0