Speaking as part of Kilgraston’s Women and Business series, Ms Rollo gripped her audience, of Upper Fourth and Lower and Upper Fifth, with tales of grisly murders and landmark historical cases.

“Scottish lawyers are justifiably proud of their profession,” she said.

“Our legal system is one of the best in the world; it’s independent, with all cases requiring corroborated evidence. Everything must be backed-up by independent evidence.”

Ms Rollo explained how the role of a PF is to “prosecute on behalf of the state” and that, while there might be more glamorous and more highly paid areas of the law, she derived a great sense of job satisfaction, knowing that the truth had been sought and just results served: “I sleep easy at night,” she said.

One pupil wondered if she ever felt threatened. “Not really,” she said, “most criminals have a very healthy respect for those practising law and they know that the police are very protective of us.”

Courtroom procedure was discussed with the roles of both defence and prosecution explained: “Police present us, the PFs, with evidence and it is up to our office to decide, through looking at the available evidence, if there is a case there to answer. It’s the defence’s job to represent their clients’ interests.”

Once submitted, Ms Rollo explained that, under Scots law, statements cannot be withdrawn: “After a witness statement has been provided, it is for the fiscal to decide what happens with the case. We prosecute in the public’s interest.”

Pupils heard how any university degree can lead you to a legal career, with a subsequent two-year conversion course being required.

“Once you have your postgrad you can apply for a two-year traineeship with the Crown Office and Procurator Fiscal Service where, if successful, you will work in different departments around the country.”

For those looking to experience working in a different country, a career with the COPFS offers the opportunity of a stint in The Hague with Eurojust, the European Union Agency for Criminal Justice Cooperation.

“Parking fines to post-mortems, it’s all in a day’s work,” Ms Rollo said.