Casey Kasem, who was the host of American Top 40 and was the voice of Shaggy on Scooby Doo, died in June 2014 at the age of 82 from a Parkinson’s-like disease — leaving behind an estate valued between $80-$100 million. Kasem’s vicious family feud now includes allegations of murder and elder abuse — Check out “48 Hours” Saturday at 9PM Central on CBS. And see the preview below.

Casey Kasem, third from left, surrounded by his children from his first marriage, Michael, Julie, and Kerri KERRI KASEM