It seemed to be a burglary gone wrong.
Morwell man Scott Alan Murdoch, 38, was on Friday charged with Ms Blackwood’s murder in an out-of-sessions hearing before a bail justice.
He has been remanded into custody and will appear before the Melbourne Magistrates Court on Saturday.
Murdoch was arrested in Rowville earlier on Friday, a day after investigators released CCTV footage of a white Nissan Tiida seen in the area before and after Ms Blackwood’s death.
The homicide squad on Thursday said there could be a link between the car and a man seen acting suspiciously in the area on the same day of Ms Blackwood’s murder.
The breakthrough prompted Detective Inspector Mick Hughes to issue a warning to her killer.
“We know we will get to you,” he said on Thursday.
It’s believed attempts to withdraw money from Ms Blackwood’s bankcard were made at the local bank on the same day she died, but footage of the ATM was lost before detectives learned of its existence.
Police have received more than 200 calls in relation to the murder since Ms Blackwood’s death.
Ms Blackwood, a popular figure in the semi-rural town, left behind her daughters, a 13-year-old son and her husband Peter.