The trial began on Monday at Wellington District Court.
Summing up for the jury this morning, Judge Arthur Tompkins said the Crown's case was the complainants' evidence was truthful and sufficient and that they had no reason to lie.
The Crown said the complainants "had not put their heads together, colluded and made false allegations", Judge Tompkins said.
The defence case was that nothing sexual had ever happened and the complainants had invented the story because of problems they were having in their lives at the time the alleged offences took place, Judge Tompkins said.
He said the defence also challenged the reliability of the complainants' evidence.
Cardno, who gave evidence earlier this week, denied all the allegations and told the court he was in a relationship when the alleged offences took place.
He's remanded on bail until sentencing on November 26.
- APNZ