In the days following his arrest, those who knew Durst best - or simply encountered him during the decades-long period in which he somehow managed to avoid prosecution - have come forward with strange stories of the real estate heir's troubling behavior.
Earlier this week, Douglas Durst stated that he believes his brother killed seven pet dogs as "practice" before allegedly murdering his wife Kathleen McCormack in 1982.
Today, Durst has been accused of another disturbing act of animal mutilation by the former judge who presided over the 2003 trial in which Durst was acquitted of the murder of Morris Black.
"It was June 29, 2006," Criss tells the newspaper. "I came home from work around 5 pm, and you can imagine how hot it was. I saw something on the walk that leads straight to my front door.
"It was a little gray cat that had been cut behind the shoulders. It was a head with its two front legs...It was not just thrown there, it was placed there.
"I believe it was Robert Durst. I know this guy had a history of cutting up his dogs."
Criss says she first ran inside to make sure that Durst had not harmed her dogs. She then called local police, who performed several tests, but were unable to prove that Durst had killed the cat.
Criss says she believes Durst left the head as revenge for her testifying against him at his parole hearing.
Though he has yet to be convicted of a murder, Criss says that she believes "Robert Durst is a serial killer."
Brandy Norwood hit a car in front of her by failing to brake in time, killing the driver in front of her. Brandy took full responsibility for the accident, but was never charged.
Robert Blake was arrested and tried for killing his wife, Bonnie Lee Bakley. He was found innocent, but was helpd liable for her death in a civil suit.
So SNOOP wasn't the one who pulled the trigger, but his bodyguard was. He was still arrested in the death of a rival gang member and represented by Johnnie Cochran.
Rebecca Gayheart struck and killed a boy in a crosswalk when she didn't want to stop and wait behind the line of cars who'd stopped to let the boy cross the street.
