Ervin: Three years non prescription drugs in spain O.J. Simpson's return to the courtroom was documented in the form of another police mug shot. The graying convict, who has spent the last four years in prison, arrived back in a Las Vegas courtroom on May 13, 2013 for a conviction for armed robbery and kidnapping. Now 65 years old, close friend Jim Barnett describes Simpson as grayer, paunchier and limping a little more these days from old knee injuries.