Jutting, a Cambridge University graduate who previously worked at Bank of America Corp in Hong Kong, has been accused of murdering Sumarti Ningsih, 23, and Seneng Mujiasih 26, two years ago.
British banker Rurik Jutting, who is accused of the brutal murder of two Indonesian prostitutes, fantasised about kidnapping a young mother and her baby and holding them captive, a Hong Kong court has heard.
Jutting denied murder on the grounds of diminished responsibility as he was diagnosed with narcissistic personality disorder and sexual sadism, as well as cocaine and alcohol addictions, which combined to lessen his self-control.
He tortured Ningsih inside his apartment for three days before killing her and stuffing her body in a suitcase found on his balcony.
Latham on Tuesday acknowledged that Jutting was in control in parts leading up to the killings but emphasised the killings were not something Jutting meant to do.
According to a report from Chow read to the court, Jutting said he had given his first victim, Ningsih, opportunities to leave his apartment.
"Despite the presence of abnormality of the mind it doesn't substantially impair his mental responsibility", she said.
Referring to Chow's report, he said that Jutting had had homosexual experiences before moving to Hong Kong, and added that Jutting referred to himself as "96% heterosexual". Details of the conversation was not made clear in court. The video evidence also showed Jutting telling police he was consuming 10 packs of cocaine a day - each costing $HK1000 and that he ingested up to 20 grams of cocaine just before the second murder.
After killing Mujiasih, Jutting had called his boss and said: "I'm in a lot of trouble, you have to do something about the bank's reputation", Owen said.
Jutting's defence lawyer Tim Owen, QC, claimed his client had been sexually abused while boarding at the prestigious Winchester College, the BBC writes.
The trial, which is in its second week, has attracted large worldwide scrutiny due to the brutality of the killings in a city where crime is relatively low.
Jutting took hours of video on his iPhone as he tortured Ningsih.
Freshly shaven and wearing a pale blue button down, Jutting focused on the session intently on Wednesday, making notes in his sectioned off area where he was flanked by three policemen.
He smiled at times as his defence team challenged Chow, the prosecution witness.
Murder carries a mandatory life sentence, while manslaughter carries a maximum of life though a shorter sentence can be set. The defence also detailed Jutting's father's attempted suicide by slashing his wrists when he was 16.
"He described it in a way that he was a victim of sexual assault", said Mr Latham.
Leading up to the killings Latham said Jutting suffered a breakdown.
Dr Oliver Chan, a medical officer at the Department of Forensic Psychiatry, at Castle Peak Hospital, said he believed it would be hard for Jutting to resist cocaine but it would "not deprive him of his ability to control himself".
In others he talked about how imprisonment and torture were a "sexual fantasy" of his, while in another he said he shouldn't have tried to translate them into real life.