Robert Durst, the estranged son of one of New York’s most prominent real estate families, has been arrested on murder charges over the killing of a longtime friend in 2000. Durst has been suspected in multiple killings for years. Authorities are still investigating him over the disappearance of his wife in 1982. In a separate case, in 2001, Durst was acquitted of killing and dismembering an elderly neighbor, after claiming the death was an accident. Durst’s arrest for the murder of his friend Susan Berman came after the filming of an HBO documentary series about his life. During an unguarded moment caught on tape as Durst wore his microphone in the bathroom, he whispered: “What the hell did I do? Killed them all, of course.”