He fell down the stairs and fractured his skull. That's how he died. Everybody knows what a heavy drinker he was.
5 seconds sound clip from the The Strange Love of Martha Ivers movie soundboard.
You can hear this line at 01:45:54.841 in the Blu-ray version of the movie.
Quote context
[...]
- Don't break up our happy home. It'll have to be you or me. And unless you do it now, it'll be you.
- You mustn't think I'm drunk. I'm not. It's just that I'm sick. Inside of me, I'm sick.
- Sam, you believe me, don't you?
- Now, Sam. Do it now. Set me free. Set both of us free.
- When I dreamed about you coming back...
- Your whole life has been a dream.
- I thought you'd be the Sam I knew as a child.
[...]