Fifty years ago, a British spy was tasked with tracking down the infamous Grey Fox. Now the old spy has finally tracked down Grey Fox to Springfield: Grey Fox is Abe Simpson, Homer's father and Bart's grandfather. Homer refuses to believe this.
Tropes:
- Arson, Murder, and Jaywalking: Among the evidence Terrence shows Homer that Abe might be a Russian spy are dishonorable discharges from the Army, the Navy, and Amazon Prime.
- Call-Back: One of the clues to the Grey Fox's identity is the Flying Hellfish symbol.
- Disguised in Drag: Terrence dresses as an old lady as a cover. Homer finds the idea of a British man in drag shocking.
- Fake American: In-Universe. Terrence pretends to be an American cop to try and escape getting arrested.
- Fan Disservice: After seeing Abe seemingly committing treason, Homer says that it's the worst thing he's ever seen. Then he sees Patty and Selma sunbathing in bikinis and amends it to third worst.
- Gilligan Cut: Young Terrence vows to find the Grey Fox promptly. Cut to fifty years later, finally arriving at Springfield.
- Impossible Shadow Puppets: As Terrence tells the guys at Moe's about his life as a spy, his shadow is acting it all out. Camera then pans over to Moe doing the shadow puppets.
- Inadvertent Entrance Cue: Terrence's daughter says that he's harmless as long as he doesn't have access to guns. Enter Herman with a large delivery of guns for Terrence.
- Mistaken for Spies: Terrence thinks Abe is the notorious Grey Fox, a Russian spy. He notes that Abe comes every day and exchanges canes from another old person, then takes an envelope from two guys dressed like Russians. Abe explains that the envelope has meds from Canada, and that he just likes taking other people's stuff.
- Punk in the Trunk: Terrence puts Abe and Homer in the trunk of his car. After everything is resolved and Marge tells Homer to drive with Terrence, he tries to go back in the trunk before Marge corrects him.
- Shout-Out:
- To The Third Man. A clip of it is playing at the retirement center; the theme plays several times; and the scene at the amusement park includes a booth selling Joseph Cotten Candy and a parody of Orson Welles (not as Harry Lime, but as his older self) doing the "look like little dots" line before he gets on the Ferris wheel.
- The title is a reference to The Man from U.N.C.L.E..
- Throw the Dog a Bone: Feeling sorry for Terrence, Abe claims to be the Grey Fox and gets arrested to give him a win.
