Frail-looking Robert Durst denies killing best friend

A frail-looking Robert Durst struggled to hear his attorney as he took the stand at his murder trial – in a wheelchair, not a witness chair — and denied killing his best friend two decades ago. Durst, 78, looked extremely feeble and strained to speak Monday as his attorney, Dick DeGuerin, took the risky move of calling a murder defendant to testify. “Bob, did you kill Susan Berman?” DeGuerin said to open the testimony of the New York real estate heir.