Fred Dinenage looks back over the life of Lord Lucan; the aristocratic figure whose glamorous life became tainted by murder, mistaken identity and events that would launch the biggest manhunt in British history.

Lord Lucan's life had gone from gambling, parties and weekends in the country to a bitter divorce, a custody battle for his children and huge debts. His only way out was to murder his wife, instead he murdered the nanny when he mistook her for Lady Lucan.

He then attacked his estranged wife who managed to escape with severe injuries. Meanwhile Lord Lucan was making his own exit; he disappeared after the attacks, only visiting a friend briefly, he was never seen again. There have been many reported sightings around the world but the Lord Lucan mystery continues.

Fred Dinenage examines the brutal crimes of child killer Mary Bell.

At just 11 years old Mary Bell shocked the country when she was convicted of strangling two young boys aged just 3 and 4. What made this child commit such horrific acts and can children who have murdered change?