Amigoland by Oscar Casares- spoiler requested

Has anyone read this book? I’m supposed to be reading it for my book club (by tomorrow) and I’m about 2/3 of the way through. Don’t want to finish it. Don’t like the nursing home setting (been through too much of that IRL) and don’t care so much about the characters.

What is the big secret about the grandfather at the end of the book?

Thanks.

Dang… :frowning: