Kate McCann has branded the Portuguese detective behind the decision to make her a suspect in her daughter Madeleine's disappearance "a disgrace".
Goncalo Amaral believed Mrs McCann and her husband Gerry could have been involved in the case of the missing three-year-old and even wrote a book entitled The Truth About the Lie.
Speaking in an interview for the first time since they were formally cleared of any link to their daughter's disappearance, Mrs McCann criticised Mr Amaral's behaviour.
Asked about what she thought of 48-year-old Mr Amaral - who was sacked from the case last October - and his decision to publish a book about his experience, she replied: "It's a disgrace."
There has been little secret about the animosity between the McCanns and the Portuguese police over the investigation into Madeleine, but the couple has refrained from criticising them openly.
Since they were cleared of all involvement in July this year and given access to the police files in August, the couple's private investigators have continued to follow up potential leads.
