'If I wanted to bump somebody off, I'd bump them off'
THE scientist accused of trying to murder his wife said if he wanted to kill someone, he would be "smart" - and they would be dead.
Robert Wayne Ridgeway pleaded not guilty this week to the attempted murder of his wife Pepita and not guilty to an alternative charge of deliberately administering a noxious thing.
The Crown contends Mr Ridgeway tried to asphyxiate his wife with an insidious Sunshine Coast nitrogen death plot.
Prosecutors claim he used a hose in 2016 to infiltrate a caravan with the gas as his wife lay sleeping.
In a police interview from July 5 that year played to Brisbane Supreme Court jurors, Mr Ridgeway said the allegations were nonsensical.
"If I wanted to bump somebody off, they would be bumped off," he told Noosa Heads police.
"If I was going to do what you're saying, I wouldn't do it a stupid way. I would be smart about it."
The physicist said his wife was like a "spoiled child" who'd throw tantrums when not getting her way.
"She's very pretty and she can be very nice, but she can also be very nasty."
He said his wife had been like that about once a week for 20 years.
But Mr Ridgeway also told police his wife had been "very nasty to everybody" for the previous six weeks.
He said after "looking online" he believed his wife was getting irrational because her mother was dying of cancer.
Then he started crying.
"There's nothing we can do about it."
Mr Ridgeway also said when he had no job his wife told him to get a job - but when he did have a job, she said he needed a better paying one.
"It disappoints me that she's so materialistic about things. I like money when I have it, but so what?"
The Ridgeways previously lived in the USA but the husband said his wife "demanded that we go back to Australia".
Defence counsel Catherine Cuthbert previously suggested Mrs Ridgeway thwarted her husband's job-hunting efforts.
The trial continues. -NewsRegional