The Mysterious Death of Casey Kasem

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[music] James Brown and Papa don't take no mess, part one. This is Casey Casellen Hollywood on American Top 40, a number eight. If you grew up in the '70s, the '80s or the '90s, you knew that voice. As Michael Jackson threatens to take over the Top 40... Casey Casellen was everywhere, counting down the hits. Here's a tune that reached the Top 10 a few weeks ago. Got as high as number nine. And if you're too young to remember that, how about this? [music] Casey was the voice of Shaggy from Scooby-Doo. Here it comes. [music] I love that man so much. I would have died for him. [music] Casey and I were married here. There were 500 people here. We had our friends and family. [music] It was the most incredible day of my life. [music] In 2014, Casey Casellen was dying of a Parkinson's-like disease. He was about to leave behind an enormous estate, worth between 80 and 100 million dollars. His family went to war over that money against each other. Gene killed my father. And when you say killed, do you mean murder? What she did led to his death. That's a lie. It's a flat-out lie. Gene, Gene, Casey. He was perhaps the most famous person ever known for counting backwards. Radio legend Casey Casellen died today at the age of 82. I ran back in the room and I picked him up in my arms and he held him so tight. And I said, "I have never loved anybody like I have loved you." She isolated him and tortured him. My dad was left to die in a facility. They chemically restrained him. They removed his hydration, his nutrition, and all proactive medical care. Not one decision was made by me. My dad was dying. And I looked at her and I said, "Dad's not going to be her for very long. You should get to the hospital." And she said? Oh, she wouldn't talk to me. That's what she did. Always. If you were going to count down the American Top 40 Family Feuds, this battle would be number one. The honor is stated. I am. I am. I am. I am. I am. What person in their right mind throws frozen meat at you screaming? I am. I am. Biblical verses. To the dogs. To the dogs.
Transcription truncated.
Four years after his death, a family feud erupts over radio legend Casey Kasem, exactly how he died and who was responsible -- an estate that could be worth $100 million is at stake. "48 Hours"' Peter Van Sant reports.