Accused wife-killer Peter Rex Dansie was engaged in "steamy" online chats with two women and was ready to fly to China with a bag of sex toys and condoms shortly after his wife's death, it can now be revealed.

Key points: Peter Dansie is accused of murdering his wife, Helen, by drowning her in an Adelaide parklands pond

Peter Dansie is accused of murdering his wife, Helen, by drowning her in an Adelaide parklands pond Suppressions on online chats, internet searches and sex toys have been removed

Suppressions on online chats, internet searches and sex toys have been removed Mr Dansie's defence case has begun

During his opening address in May, Crown prosecutor Jim Pearce said Mr Dansie had been searching the internet for "sexual role playing games", "thigh high boots cheap sale" and "sexy six inch stiletto sale" in the weeks leading up to Helen Dansie's alleged murder.

This evidence was suppressed at the time, but Supreme Court Justice David Lovell today revoked that order.

Mr Dansie is accused of murdering his wife by drowning her in a pond at Veale Gardens, in the southern Adelaide parklands, on April 16, 2017.

"In addition to his internet searches, the accused was sending messages to somebody calling themselves Rose," Mr Pearce said.

"In those messages, he told Rose he would like to see more of her, in particular he would like to see more photos of her in 'bra and panties'.

"He was also communicating with someone called Sophia. His messages to Sophia were sent between April 6 to 15."

Prosecution says messages suggest a motive

Mr Pearce said messages included, "Do you have a friend in mind who you want to play with us?" and "I will have to think of some more interesting scenarios for our games".

"Another message [was] 'we make a good couple. Me handsome, you beautiful'," Mr Pearce said.

"He was sending messages that the accused himself would describe when talking to police as being 'steamy'.

Helen Dansie drowned in a pond at Veale Gardens in Adelaide in 2017. ( Supplied: SA Police )

"On the prosecution case, those messages were being sent in the lead-up to Mrs Dansie's death — a death he would claim was sudden and unexpected.

"In one of those messages, he is talking about them being a couple, he and Sophia, 'playing games comes first, then husband'.

"One month after Mrs Dansie's death, the accused was booked to fly from Australia to China."

Mr Pearce said the day before Mr Dansie was scheduled to fly to China, police searched his Waterfall Gully home and found a suitcase packed with condoms, Viagra, sex toys and lingerie.

"Again, suggesting he had a motive to want his wife out of the way," he said.

The prosecution case has now closed and the defence case has started.

Defence outlines couple's relationship

As part of the defence case, Greg Mead SC called two witnesses who told the court about the care Mr Dansie provided to his wife.

Witness Anne Wilk told the court Mr and Mrs Dansie would present like any other married couple.

"Peter was great," she said.

"The first thing that stood out to me was when we went around for dinner I asked if I could bring anything … and Peter said, 'Can you bring something for Helen, some flowers or a book?'

"He always made sure she was included."

She told the court that she would catch-up with the couple every two to three months.