The Man from G.R.A.M.P.A.

"The Man from G.R.A.M.P.A." is the 21st episode of the thirty-second season of the American animated sitcom "The Simpsons", and the 705th episode overall. It aired in the United States on Fox on May 16, 2021. The episode was directed by Michael Polcino, and written by Carolyn Omine. In this episode, Homer meets a British secret agent.
Plot.
Homer Simpson meets a British secret agent named Terrance who has spent fifty years hunting a suspected Russian spy known as "The Grey Fox." After Homer and his friends hear Terrance's story, Homer soon discovers that not only is Grampa Simpson the man Terrance seeks, but that he might even be a traitor like the agent claims.
Reception.
Critical reception.
Tony Sokol of Den of Geek gave the episode 3.5 stars out of 5, stating "“The Man from G.R.A.M.P.A.” feels like the kind of movie Homer would fall asleep at. The British spy film references come too respectfully, and the laughs have to squeeze through too stiff an upper lip. It’s not that it’s too clever, as opposed to funny, which has plagued some episodes. It pulls its punchlines when they should be hot enough to cut 007 to a size .035."
Jesse Bereta from bubbleblabber.com gave the episode a 7/10, stating “Unfortunately, there is not much excitement going on for an episode that should be action-packed. Once the story gets rolling, it is more about convincing Homer that his father is a spy more than any actual spy work. It would have been fun to see this long-running series try to inject some action like we would not usually see. They managed to accomplish some great stuff back when Hank Scorpio came to Springfield. Regardless, it was a fun episode that tried something different. Sure, we have seen plenty of Grampa Simpson’s old war days, but not much after that, aside from raising Homer. Alternatively, there was much room throughout this story to expand or do something unexpected. Unfortunately, the episode follows much of the same formula you would expect. Though it is a pleasing addition to a diverse season 32.”