Actor Robert Hughes drew a blank expression when a family friend confronted him over allegedly fondling her daughter.
"He seemed to be blank," the mother of an alleged victim told the Downing Centre District Court on Tuesday.
"Certainly no shock, horror, nothing."
The Hey Dad! star has pleaded not guilty to 11 sexual and indecent assault charges.
The 65-year-old is accused of assaulting five girls in the 1980s and 1990s, including a child actor and a family friend's daughter.
An alleged victim told the court on Tuesday that Hughes crept into her room while she was sleeping and her parents socialised outside in 1984 or 1985.
The woman, who cannot be identified, said she woke to find Hughes' face 20cm from hers and his hand down her pants.
The girl was in her early teens.
The court heard the girl later asked her mother that Hughes and his wife not visit their home because Hughes was "horrible".
When the mother asked why, she told the court her daughter replied: "I have to keep hiding from him because he touches me ... between my legs".
The woman said she confronted Hughes at her Sydney home about the allegation he tried to fondle her daughter.
"He didn't deny it or admit it, he just heard it," she said.
"I said 'well if you went anywhere near any of my children again I would go to the police'."
But Hughes' lawyer Greg Walsh suggested the conversation never occurred.
Despite the revelations, the mother said she was "bullied" to go on a holiday north of Newcastle with the Hughes family, minus her daughter, because it had been paid for.
"I shouldn't have been there either ... none of us should have been there," she told the court.
The woman kept her distance from Hughes but "watched him like a hawk", the jury heard.
Mr Walsh asked why the woman did not go to police.
"I didn't know enough about the situation at the time," she said.
"I didn't know how far it had gotten."
Hughes' wife was best friends with the woman and the couples often had dinner parties at the woman's home in the mid-80s.
The alleged victim told the court Hughes assaulted her twice during these dinner parties.
She said she woke up to Hughes kneeling down next to her bed with his hand in her pants.
"I didn't know what to do, I was completely shocked and scared so I just closed my eyes," she told the court.
The woman said she opened her eyes and saw Hughes looking to where his hand was.
"I pushed his hand away..." She said.
"He got up and before he went to leave he licked my right cheek..."
The trial continues.