A Queensland criminologist allegedly played blindfolded sex games with young girls at his home in the 1970s.
Paul Wilson, 75, is accused of luring girls into his bedroom and showing them a life-sized poster of himself naked.
He also played blindfolded games of hide-and-seek with two victims, making them remove their clothing before sexually assaulting one of them, it is alleged.
Wilson is facing retrial in the District Court in Brisbane on four counts of indecent treatment of one girl under the age of 12.
In one incident he lay naked on his bed with a cat covering his genitals before removing the pet and forcing the girl to stroke his penis, the court was told.
On another occasion he allegedly assaulted her in his bedroom, telling her "Percy is coming to play", which was a nickname for his genitals.
She was also repeatedly forced to dance naked for Wilson while he touched himself, the jury was told.
In another incident, recounted to the court, he indecently assaulted the girl while she was in the family's swimming pool, putting his hands under her bikini bottoms.
He is further alleged to have made the girls touch each other for his own sexual gratification.
Prosecutor Phil McCarthy said Wilson had a persistent sexual interest in his victim and the repeated abuse only stopped when she and her family moved away.
The alleged assaults are said to have taken place at his house in Indooroopilly between 1973 and 1976.
Wilson denies the charges and says the alleged events never took place.
The trial continues.
AAP