The son of a Canadian millionaire was found guilty of first-degree murder on Wednesday after he tortured his fiancée to death just weeks after she had given birth to their daughter.

Blake Leibel, 37, was found guilty of multiple felonies including mayhem and torture in the death of Iana Kasian in May 2016, according to the Associated Press.

Kasian, 30, had welcomed their daughter, Diana, just three weeks earlier.

The budding filmmaker and graphic artist is the son of Lorne Leibel, one of Canada’s wealthiest real estate developers and a one-time Olympic sailor, and Eleanor Leibel, a plastics heiress who died in 2011. Leibel was reportedly living on an $18,000 a month allowance.

The trust funder was perhaps best known for his graphic novel Syndrome — published in 2010 — in which a scientist experiments on a serial killer in order to find a cure for evil. The killer murdered a man by slitting his throat and hanging him by his ankles so he bled out.

Deputy District Attorney Beth Silverman told jurors in court that the comic served as a “blueprint” for Kasian’s brutal murder, the AP reports.

View photos Iana Kasian was found dead in the apartment she shared with fiancé Blake Leibel More

Kasian was found in the pricey West Hollywood, California apartment she and Leibel shared, on a bed, drained of her blood, and missing her scalp.

Her autopsy results from the Los Angeles County Coroner’s Office showed that she died of blunt force trauma to the head, according to Fox News. She also had portions of her face torn off.

“This was depravity. Ms. Kasian died a slow and painful death. Her daughter will never know her, and that’s because of the unconscionable acts you heard about during this trial,” Silverman told the court.

View photos

It was Kasian’s mother, Olga, who first alerted police to the possible crime. The Ukranian, who speaks no English, alerted police to her missing daughter after dozens of missed text messages and phone calls.

It took multiple attempts for Olga to finally catch the attention of police, according to The Hollywood Reporter. Despite performing a welfare check at the West Hollywood apartment, police found no success. When Olga called 911, however, police arrived and broke into the apartment where they found Leibel lying in bed with Kasian’s corpse with Diana lying safely nearby.

Pieces of Kasian’s flesh were found on the bed, behind the mattress and on the floor while a bed sheet showed Leibel’s bloodied handprints, THR reported.