The Case Of Sally Challen
In 2011 Sally Challen, 65, was jailed for the murder of her husband Richard, 61.
Her sons, James and David, believe Sally was the victim of long-term psychological abuse, something they suggest was ignored during her initial trial.
Her murder conviction was quashed by the Court of Appeal in February 2019.
Prosecutors at the Old Bailey accepted a lesser manslaughter plea on the grounds of diminished responsibility.
On 7 June 2019 it was announced that she will not face a retrial for Richard's murder.