Continuity mistake: Though she and Mark have both been calling Putzi the dachshund (who is visibly female) a "she" and a "good girl" throughout the episode, April has an odd memory lapse later and refers to the dog as "he." (00:29:30)
The Montori Device Affair - S1-E5
Continuity mistake: The bad-guy bellman knocks Mark out, then zips him face down into a garment bag. He then places the bag, without turning it, onto his luggage cart, and the outline of the body inside (a dummy, judging by how effortlessly he lifts it), is now facing up. (00:22:50)
Continuity mistake: Mark, April and the professor leap from a boat seconds before a bomb goes off aboard. But in the shot of the boat exploding right after they jump, there's no one in the perfectly calm water, and the empty rubber raft is still alongside the burning boat. Somehow, though, the escapees are rowing to safety in that same raft a few shots later. (00:03:20)
Continuity mistake: The candles LeGallows slices up with his fencing foil disappear from the floor a few shots later. (00:44:30)
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 Lethal Eagle Affair - S1-E11
Continuity mistake: April is undercover in Madame Gita's mansion, and has been speaking with her normal (American) inflection throughout most of the episode. Midway through, however, she suddenly acquires a German accent for no apparent reason. (00:35:15)
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)
The Little John Doe Affair - S1-E13
Continuity mistake: When the Italian U.N.C.L.E. official parks his red sports car outside the jail and gets out, he leaves the door ajar. When he comes back with April, the door has closed itself. (00:38:15)
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 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 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
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
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 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 High and the Deadly Affair - S1-E28
Continuity mistake: Merek's bird is sitting on his shoulder facing backward. In the very next shot, as he stands, the bird is suddenly facing forward. When he starts to sit down, the bird is still forward, but in the next shot, a close-up of him sitting, birdie is facing to the rear again. (00:07:50)
