1970s teen idol, David Cassidy has died. He was being treated at a Florida hospital after he reportedly went into organ failure. Cassidy rose to fame on the television sitcom 'The Partridge Family'. He played Keith Partridge, the oldest child of a widowed mother of 5 who formed a singing group and toured the country on an old school bus. Cassidy also had a successful solo career in music. InsideEdition.com's Mara Montalbano has more.