Your sister isn't dead, Robbie.
4 seconds sound clip from the Poltergeist (1982) movie soundboard.
You can hear this line at 00:56:32 in the Blu-ray version of the movie.
Quote context
[...]
- You know, you were very funny. Your hands were shaking about a mile a minute.
- It isn't over. I'm absolutely terrified.
- It's all the things that we don't understand.
- If I got killed, would I come back as a ghost and get stuck in the house like my sister?
- Your sister isn't dead, Robbie.
- If I got killed, could I visit her and show her how to get back here?
- Some people believe that when you die your soul goes to heaven.
- His soul was invisible, Robbie. You couldn't see it.
[...]