(Newser) – Oscar Pistorius returns to court next month for his murder trial, notes the Huffington Post, and anyone interested in the case should make a new Vanity Fair piece required reading. The article by Mark Seal doesn't have any bombshell revelations on the main question—did the amputee Olympian murder girlfriend Reeva Steenkamp in a rage or, as he insists, mistake her for a burglar?—but it paints a more complete portrait of all the main players, including the detective convinced of the athlete's guilt, and recounts the night of the killing. Pistorius in particular comes off as an egomaniac with long-standing anger issues.

"When Pistorius competed at the London Olympics, last summer, (a radio host) interviewed the athlete’s roommate at the Olympic Village: ‘What is it like to sleep in the same room with a superstar?’ And he said, ‘I moved out. Oscar is always shouting at people on the phone.’"

A "former confidant" tells Seal that the Olympics changed Pistorius for the worse. “He was bragging about his adventures in the good life. He was like, ‘I’m the man, I’m Oscar. The world owes me.’ That sense of entitlement. He wasn’t like that; he was made into that."

into that." In subsequent training sessions at a gym, his “swearing would astonish the mothers and children also using the gym," says a reporter. “He would storm out of the gym midway through a workout. He would be surly, rude. It seemed as though he survived on energy drinks and caffeine pills.”

Here's one assessment of the six-page article: "After reading Seal’s piece, I’m convinced that Oscar Pistorius is kind of a jerk," writes Justin Peters at Slate . "But while the piece definitely nudges the reader toward the conclusion that he murdered Steenkamp, it hasn’t cleared up all reasonable doubt." Read the Vanity Fair piece in full . (Read more Oscar Pistorius stories.)