What was this alien film called?

[illnever]

I'm losing my mind over this.

Film was about a guy in a nursing home claiming he was an alien and he was going home on a set day. People wanted to go and had to write a letter why. He did go and took a woman with him (although you don't see it). Anyone??

Oh yeah. I think Kevin Spacey was in it?

In Cocoon old people went off with aliens but that's not it.

His name was Prot, and the book/film was called K-PAX ☺

K pax?

k Pax?

But asylum not old people's home.

K-Pax

Yes it was K-PAX!

Oh, the Kevin Spacey one? KPax or something. That's not in a nursing home and doesn't he disappear by himself?

It was KPax, thank you all so much!