The prosecution case against Lloyd Rayney is expected to finish as early as next week, with the couple's two daughters yet to be called to testify.
Prosecutor John Agius told Justice Brian Martin yesterday the State was aiming to finish with its witnesses next week.
Mr Rayney is fighting an allegation he killed his wife at their Como home on August 7, 2007, while one daughter slept upstairs and the other was at a concert. The girls were aged 10 and 13 at the time.
Mr Agius said other remaining witnesses included Mr Rayney's sister, two forensic pathologists and the detective in charge of the murder investigation.
He said the State did not plan to call a male parent from the daughters' school who rumours suggested was having an affair with Mrs Rayney.
However, defence lawyer David Edwardson said he wanted to question the man, suggesting he "was clearly more than just a friend".He said this could be evidence that Mrs Rayney kept secrets from her friends and family.
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