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 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 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 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 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)
The Lethal Eagle Affair - S1-E11
Revealing mistake: While Madame Gita is testing the death ray device, she orders Franz to go check the power. He trots off to obey, and in the process crosses, miraculously unscathed, directly in front of the "deadly" light beam. (00:42:15)
The Little John Doe Affair - S1-E13
Continuity mistake: Highly-trained secret agents are supposed to know their own IDs. When April reports to HQ over her communicator, she identifies herself as "April Dancer, Section One." She works, as do all the U.N.C.L.E. field agents, for Section Two. (00:29:00)
Continuity mistake: The candles LeGallows slices up with his fencing foil disappear from the floor a few shots later. (00:44:30)
The Garden of Evil Affair - S1-E8
Deliberate mistake: The bad guys chase Mark through a movie studio backlot past a London bus with a large red "Out of Service" sign on its side. During the ensuing shoot-out scene, the film is reversed for some reason, and the sign on the bus is suddenly backwards. (00:24:20)
The Paradise Lost Affair - S1-E10
Continuity mistake: Mark's blue shirt, soiled in the shipwreck and again in the fight with Henry, launders itself nicely a few shots later, becoming completely dry and spotless once again. (00:24:30)
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 Jewels of Topango Affair - S1-E14
Continuity mistake: In the air, the small plane Mark flies is all white. Once on the ground, it mysteriously turns blue. (00:05:15)
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 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 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 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 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 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 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)