Britain's Darkest Taboos Episode Rating Graph

Documentary lifting the lid on shocking crimes. Family members talk about the murder of 12-year-old Tia Sharp by her step-grandfather Stuart Hazell in Croydon, south London, in August 2012.

Family members question what drove 31-year-old Ross Taggart to murder his mother and dispose of her body under a caravan in Fife.

Documentary exploring the house fire deliberately started by Carl Mills in Cwmbran, south Wales in 2012, in which he killed his baby daughter, his girlfriend and her mother.

Sonia Oatley reflects on how her 15-year-old daughter, Rebecca Aylward, was murdered by her boyfriend in 2010, reportedly as part of a bet.

The family of Kirsty Treloar speak about her shocking murder at the hands of Myles Williams in 2012, who also tried to kill her brother and sister when they attempted to defend her.

Assia Newtow's daughters describe the full extent of the abuse their mother endured at the hands of her husband.

Alissa Moore talks on TV for the first time about the abuse she suffered at the hands of her father in their family home.

Series revealing some of Britain's most shocking and disturbing crimes. In this special episode, experts examine what drives some people to kill.

Doctor Alison Hewitt discusses how her relationship with Al Amin Dhalla turned into a terrifying nightmare amid his web of lies and deceit.

The recollections of three people who spent two decades in the care of foster mother Eunice Spry, who subjected them to all sorts of physical and mental torture.

Sarbjit Kaur Athwal tells the story of how her mother-in-law plotted the murder of her young sister-in-law.

The story of how porn-obsessed killer Jamie Reynolds murdered 17-year-old Georgia Williams in Telford in 2013.

Josie Fleming describes how her 17-year-old sister Sylvia was murdered by her boyfriend Stephen Scott in Omagh, Northern Ireland, in April 1998.

The mother of 20-year-old Eddie Miller, who was murdered by his girlfriend Michelle Mills in Scalford, Leicestershire, in 2012, describes how his death has impacted on the family. Plus, forensic psychologist Keri Nixon and psychologist Emma Kenny investigate what factors may prompt women to commit murder.

The case of Danai Muhammadi, who started a blaze that killed his estranged wife Melissa Crook, his father-in-law Mark Crook and his own baby in 2011.

The mother and sister of Kirsty Grabham open up about her shocking murder, which took place in Swansea in 2009. The 24-year-old's body was found dumped in a suitcase by a motorway.

Louise Turnbull from Gateshead, talks about the abuse she suffered at the hands of her stepdad, Albert Maughan.

Friends and family of Leanne Meecham discuss her fatal relationship with her stepfather.

The tragic story of disabled murder victim Gemma Hayter. Gemma was beaten, stabbed and suffocated before being stripped and left to die by best friend Chantelle Booth and her gang on a railway line in Rugby, Warwickshire, in 2010.

The mother of Essex schoolgirl Danielle Jones speaks out about her 15-year-old daughter's horrific fate in 2001 at the hands of killer Stuart Campbell.

The story of a father who killed his seven-year-old son and 25-year-old daughter in Fife in 2008, including an interview with the victims' mother.

The story of twins Rachel Steadwood and Tracy Brown, who were sexually abused by their uncle between the ages of five and 13. Despite the horrors they endured, both women kept quiet about their ordeal for nearly 30 years but broke their silence in 2012 and as a result, John McCallum was finally sent to prison for his crimes.