A Thief is a Thief (a.k.a. Magnificent Thief) - S1-E1
Continuity mistake: When the airline pilot enters first class to announce the baggage search, we see only 7 seated passengers and many empty seats. When the angle reverses, there are instantly 15 people seated, and almost no empty places. (00:25:30)
A Thief is a Thief (a.k.a. Magnificent Thief) - S1-E1
Continuity mistake: When Mundy and Claire are sitting in the car outside the apartment building, the rear view mirror has disappeared (probably removed to prevent it from obscuring the actors' faces). It mysteriously reappears later on. (00:42:45)
It Takes One to Know One - S1-E2
Continuity mistake: When Al leaves the casino floor to call Noah, he's smoking a cigarette. When he reaches into his jacket for the wallets he's just stolen, the cigarette disappears. (00:05:30)
It Takes One to Know One - S1-E2
Continuity mistake: While he hangs from the ceiling over the jewels, Al's trapeze is spinning slowly. But when the shot cuts to a close-up, you can tell from the stationary background that the trapeze is now perfectly still. In the next full shot, though, it's spinning again. (00:39:00)
When Good Friends Get Together - S1-E9
Continuity mistake: Mundy lines up six golf balls and hits one, leaving five - until the shot reverses angles, anyway. Then there are only three golf balls left on the ground. (00:40:00)
A Sour Note - S2-E2
Continuity mistake: During his scuffle with Gino, Mundy's hair is messed up, then neatly combs itself, then is messy again, and so on several times between takes. (00:45:45)
Get Me to the Revolution on Time - S2-E5
Continuity mistake: At the party, Mundy is handed a cocktail that's blue in color. Next shot, when he starts to drink it, the cocktail has changed colors - from blue to amber. (00:07:05)
To Catch a Roaring Lion - S2-E12
Continuity mistake: The professor translates the two Chinese symbols from Mundy's brass rubbing. Then he's shown a Chinese business card, and states that the 12 symbols on the card say the same thing. But not one of the symbols on the card matches the first two from the paper. (00:24:25)
Continuity mistake: Mundy shoots a palace guard with a tranquilizer dart, and the man falls unconscious on the stairs. When his fellow guards find him moments later, the unconscious man has somehow moved off the stairs and is now lying in the corridor. (00:39:15)
The Funeral is on Mundy - S2-E20
Continuity mistake: After Mundy fights with Susanna Sutton, Sutton's shoe slipped off her foot. While she sits defeated, Mundy looks for a nearby cord to tie her hands. Despite not moving from where she was, her shoe reappears on her foot. (00:37:33)
The Baranoff Timetable - S2-E21
Continuity mistake: Ortega takes Mundy's shoes (with lock picks hidden in the heels) and locks him up. Mundy soon has the confiscated shoes back on again, though, even before he escapes the cell. (00:40:00)
The Family - S2-E23
Continuity mistake: In the opening scene, Mundy is tapping into a line by climbing a phone pole. He's starting back down when the shot cuts to a wider angle - at which point he's back at the top and starts down the pole all over again. (00:00:55)
Flowers From Alexander - S3-E5
Continuity mistake: Sykes is drinking a beer when Nicholas knocks on the door, and he leaves the beer can on the balcony railing when he crosses to let Nicholas in. When they both walk out onto the balcony a moment later, the beer can has disappeared. (00:43:05)
The Three Virgins of Rome - S3-E7
Continuity mistake: When Alister Mundy's three friends are retrieving the paintings at the end, a small black dog appears, seemingly out of nowhere, and between takes is suddenly trotting along beside them. (00:44:50)
Continuity mistake: When Botarelli gets up from the banquet table, a large orange, sitting beside his wine glass in close-up, disappears in the next, wider shot. (00:21:30)
Continuity mistake: Angela's limo picks up Mundy and drives down a tree-lined country road. But in the very next shot, the view out the back window is of a busy city street with nary a tree in sight. (00:13:00)
Continuity mistake: Mona draws a heart in the dust on the bar and writes "Al + Mona" inside it. When we see a close-up it, however, the L is suddenly much larger than before, and the name "Mona" is written in smaller letters. (00:04:00)
To Sing a Song of Murder - S3-E20
Continuity mistake: At the airport, Mundy asks Marilyn what's wrong and places his hands on her shoulders. Then the shot cuts to a reverse angle, and his hands are resting on top of the car door instead. (00:07:50)