I was shocked over the weekend when I heard Erin Moran, who played "Joanie" on Happy Days, had passed away at only 56. She was good friend with co start Cathy Silvers who played "Jenny Piccalo". Many suspected a heroin overdoes, but an autopsy report says no. More on that here
Although they were close Cathy didn't know Erin was suffering from stage four cancer until February.
You can watch the Insider interview here
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