After using a knife to force his way into a 71-year-old woman's home, Richard Bangoura raped her then went back to her house four times to make sure she took his threats seriously.
It's not clear whether Bangoura followed the woman home from a local pokies venue, or whether he was waiting for her when she arrived.
But he came up behind her as she put her key in the door and put a 30cm blade to her ribs and neck, forcing her inside.
He forced her to undress and show him where the bedroom was, before removing his mask and raping her twice.
Bangoura then asked her for a cigarette and spoke to her in the living room before leaving.
The entire attack lasted about 30 minutes in the early hours of November 2, 2018.
His terrifying crimes didn't end there. Before leaving, he told her not to contact police or he would come back and cut her up.
He returned to her house on November 3, 5 and 7 and on December 7
Bangoura was found guilty by a jury of two charges each of rape and threatening to inflict serious injury, and one charge each of stalking and aggravated burglary with the intention of committing assault.
Victorian County Court Judge George Georgiou jailed him for 11 years and six months on Wednesday.
He ordered Bangoura, who will be deported to Guinea at the end of his sentence, serve at least eight years before being eligible for parole.
The judge described there being little cause for optimism about Bangoura's prospects for rehabilitation.
Bangoura was raised in abject poverty in Guinea before moving to France for university. He has a daughter there who he hasn't seen in nearly a decade.
He came to Australia initially to attend an HIV/AIDS conference on behalf of his cousin, and despite having little interest in living in Australia obtained residency to improve his English, the judge said.
The truly reprehensible offending against the vulnerable woman was his first criminal offence.
It was calculated, predatory and brazen, committed entirely for his own sexual gratification.
Judge Georgiou said Bangoura had robbed his victim of the independence and freedoms she once enjoyed.
