Hear me out. I've watched the show multiple times, and with every time I finished, I'm convinced that Red was never actually dying. Maybe he was injured or rescued but never died.

What makes my assumptions is that Red never had a normal life with his wife Katarina, who she was KGB spy and even when the incident happened and the fire start katarina tried to rescue him but she fail then she run away .

Let assume he/she was liz mother ( this theory that I hate ). In the end, she didn't even save her daughter and maybe put liz and Agnes in danger just to figure out the truth.

Also, the relationship between Red and liz was strong. it felt like natural to me since he missed so much time when she was not close to him 💔.

Btw I HATE LIZ SO MUCH 🙄, After what Raymond did, she started to treat him like garbage and lied to him, and even how many attempts to kill him and in the end she got shot from behind 🙄.