A Domestic Violence Homicide Review carried out after the murder of Andrea Johnson and the suicide of her husband Keith examined how police, health bodies and other organisations handled the case.
It was published after the inquests into the deaths of the couple. It describes how Mrs Johnson had suffered years of abuse in silence, only revealed in a harrowing diary discovered after her death.
The report's author Gaynor Mears spoke to ITV News Anglia about her findings
A respected council leader would "change like the devil" behind closed doors, subjecting his wife to decade of abuse before killing her
A domestic violence report is due to be published into the deaths of a council leader and his wife in Norfolk.