Jim McCormack has many fond memories of his sister Kathie. Like driving her to modeling gigs in the 1960s at Roosevelt Field. Or the day she left their family home in New Hyde Park and moved into Manhattan, with dreams of becoming a doctor.
"I remember that like yesterday," says McCormack, now retired and living in New Jersey.
She wound up living a fairy tale - marrying Robert Durst, heir to a wealthy real estate family, attending med school and seeming to have it all. Until 1982, when she vanished at the age of 29 - leaving her husband under a cloud of suspicion, and a case that remains unsolved.
Director Andrew Jarecki suggests what might have happened to Kathleen McCormack Durst in his new film, "All Good Things," starring Kirsten Dunst and Ryan Gosling. Names have been changed (Dunst plays "Katie Marks," not Kathie Durst), but the tale is unmistakable.
"This family was torn asunder by these events," says Jarecki.
"I just listened, basically," Dunst says. "It was difficult for them. But I felt like the things they said about her, I tried to represent in the movie."
Durst has never been charged with his wife's disappearance and did not cooperate with the film. But he has seen it, and called Jarecki on the phone.
"He said, 'I really, really liked it,' " Jarecki recounts. "He said it was a hundred times more accurate than anything else" written of the case, Jarecki adds. "He said he'd cried a number of times."
McCormack hopes Durst will "man up" and eventually reveal the truth.
Till then, he says, he'll keep pushing for answers. "I don't want the lights to go out on Kathie," says McCormack. "I want to keep the porch light lit, so that she knows someone's waiting for her. And not to be afraid of the dark."