Don Cornelius' Son -- He Called Me Right Before He Died

Don Cornelius' son claims the late "Soul Train" creator phoned him just hours before he shot himself in the head -- describing the last-minute outreach as a "call of urgency."

Don's son Tony Cornelius wouldn't specify what the call was about -- telling Gayle King on "CBS This Morning," his dad's health was failing and he was "unhappy about some things" in his life.

Tony told Gayle, "You have to be in a person's shoes really to understand. Obviously, me being extremely close to him, I could tell that he was uncomfortable."

Tony added, "But our family could never know that he would -- how uncomfortable he really was."