My buddy Pepper Minstix was standing beside a terminal named Unescape Tmux in the Castle Approach. He stated he had been working with tmux lately and asked for assistance in getting him back to where he was admiring a beautiful bird. 'Ol Pepper, that crazy cat...
tmux is a terminal emulator. Hmmm... Hints about attaching implies there is a detached session, so I did some Googling (I know there was a cheat sheet, but this is easier for me) and found the command to show all existing sessions. I executed the command tmux ls and was presented with the info in the pic. An existing session. Bingo!
My Googling had shown the command to re-attach to an existing session, so I ran the command tmux attach -t 0 to attach, and voila! There's the pretty bird Pepper Minstix had been looking at.
More shenanigans were behad in the Castle Approach.