An Auckland criminal barrister says historical sexual offending charges are notoriously difficult to both prosecute and defend.
Arthur Allan Thomas - who was pardoned after twice being convicted of the 1970 murders of Harvey and Jeanette Crewe - is now facing historical rape and indecent assault charges.
Mr Thomas, who is 81, has pleaded not guilty in the Manukau District Court.
Corin Dann speaks to barrister John Munro.
