Britain's Darkest Taboos

Chloe Gazzard discusses how her sister Hollie was stabbed to death by her ex-boyfriend.

The harrowing story of how a mother-in-law plotted the murder of her daughter-in-law.

Elisa Frank tells the story of how her former lover murdered her sister and best friend.

Three people recollect how they were brutally tortured by their foster mother.

Franky Fenton tells the story of how her paranoid schizophrenic son murdered his grandmother.

Doctor Alison Hewitt discusses how her relationship turned into a terrifying nightmare.

A man reveals how his stepson's obsession with "Dexter" led him to kill his mother.

The case of narcissist Malcolm Webster, who killed his wife in 1994 Ñ and attempted to kill his second wife.

A mother and father discuss how their son was brutally killed by his con artist lover.