The Jewels of Topango Affair - S1-E14
Factual error: Mark plays his electric guitar for the tribal chief, and the amplifier works just fine, despite the fact that it isn't plugged into any power source. (00:17:00)
The Jewels of Topango Affair - S1-E14
Factual error: Hiking through the African jungle, the safari party is stalked by a tiger. Wild tigers aren't found on the African continent. They're native to Asia. (00:31:30)
Visible crew/equipment: What's that strange object following over Mark and April's heads as they leave the airport? Looks suspiciously like a boom microphone. (00:02:00)
The Moulin Ruse Affair - S1-E17
Continuity mistake: From the outside, the U.N.C.L.E. building's wall is made of red brick. But, after a large hole is knocked through it, a shot from the inside shows no red brick at all. In fact, the entire wall is now made of white cinder-block. (00:02:30)
The Moulin Ruse Affair - S1-E17
Revealing mistake: When April peeks over the rooftop, it's completely dark outside. Every time we see the inserted stock footage of the traffic down below, however, it's a filtered daytime shot. Not one of the cars has its headlights on. (00:11:40)
The Moulin Ruse Affair - S1-E17
Revealing mistake: Waverly opens a file full of papers with a small photo of April's contact clipped inside. When we see a close-up of the photo, we can also see that the page under it is part of a script treatment. Odd thing for a spy agency to keep on file. (00:18:40)
The Catacomb and Dogma Affair - S1-E18
Continuity mistake: The rear view mirror on Adriana's red sports car vanishes between shots after Mark commandeers her car. (00:18:30)
The Drublegratz Affair - S1-E19
Continuity mistake: The shape of Dr. Gork's chalkboard diagram changes completely from one shot to the next. (00:13:30)
The Drublegratz Affair - S1-E19
Continuity mistake: In the lab/control center, Rapunzel's elaborate blue necklace is suddenly missing half its baubles - but they reappear a few shots later. (00:21:30)
The Carpathian Caper Affair - S1-E21
Continuity mistake: Mark appropriates Rock's gun and is holding it directly under the man's nose. Then the shot reverses angles, and Mark is instantly several feet away, holding the gun at waist level. (00:36:40)
The Furnace Flats Affair - S1-E22
Factual error: April finds that the sign pointing to Furnace Flats has fallen off the signpost. But the board she picks up is perfectly smooth, with no nails or nail holes in it anywhere. It's never been attached to anything. (00:00:50)
The Furnace Flats Affair - S1-E22
Continuity mistake: From the inside, the swinging saloon doors are completely intact. From the outside, they're missing several slats. Later, the same doors have breaks that change positions constantly between shots. (00:02:10)
The Furnace Flats Affair - S1-E22
Revealing mistake: Stock footage spliced in at different points during the desert chase scene increases the size of the posse threefold, and changes the terrain completely from one shot to the next. (00:15:00)
The Furnace Flats Affair - S1-E22
Continuity mistake: The smudges on April's face as she treks through the desert keep changing shape and position between takes. (00:26:40)
The Low Blue C Affair - S1-E23
Continuity mistake: Mark's dark clothes get powdered white with snow during the rooftop fight. The moment he runs through the doorway, however, his suit is instantly clean and dry once again. (00:12:15)
The Low Blue C Affair - S1-E23
Continuity mistake: When Soyill and his henchman start walking toward April, who's standing at the pool table, they're standing right next to each other. When the shot cuts to a wider angle, they're suddenly several feet apart. (00:28:30)
The Petit Prix Affair - S1-E24
Visible crew/equipment: Desiree closes the window after looking out at the car race, and the boom shadow is bobbing up and down on the wall just over her head. (00:06:20)
The Phi Beta Killer Affair - S1-E25
Revealing mistake: Mark's stunt double during the fight on the mansion's porch is a very close match for him - except for the fact that he's about 6 inches taller. This causes "Mark's" height in relation to the man he's fighting to fluctuate noticeably (taller than, shorter than, taller than again) between shots. (00:37:15)
The Double-O-Nothing Affair - S1-E26
Continuity mistake: Mark injects April with plain water, telling her to play dead. She shouldn't have to play. Water in the blood stream can create oxygen bubbles, which can be lethal in a matter of minutes. He should have used saline or glucose instead. Those solutions have been de-oxygenated and purified to prevent giving patients the potentially lethal "bends." (00:40:00)
The U.N.C.L.E. Samurai Affair - S1-E27
Revealing mistake: Mark's stunt double in the final fight scene has a very bad (and obvious) brown wig. Mark's hair, however, is blond. (00:44:00)