Continuity mistake: The bullets that Leary removes from the keychain at the banquet are in a different position than they were when he put them in.
Suggested correction: We see him put the bullets in the rabbit's foot at least a day before the assassination attempt. Plenty of time for him to open the keychain simply to check and make sure he is fully prepared. Which does fall in line with his meticulous nature.
Continuity mistake: When Leary is assembling/loading his gun, the two bullets he slides out of the rabbit's foot appear to be .22 rim fire shells. The ones he slips into the gun appear to be either .32 or .38 center fire.
Continuity mistake: In the breakroom scene where Horrigan is thought to have had a heart attack, the EMTs burst in and attempt to "revive" him and he shoves them away to both sides. The camera then shifts to an over-the-shoulder view, where one EMT says "I got a call there was a cardiac case." Both EMTs are present at the left and right edges of the screen. Seconds later, Frank says "Oh, I get it. Who's the wise guy?" and stands up. In that brief interval, the EMTs have vanished completely; when everyone else files out of the breakroom, laughing, they are nowhere to be seen. (00:21:15)
Continuity mistake: As Frank goes down the glass elevator and stares at Mitch, the corpse's arms go from extended out to down toward his sides.
Continuity mistake: Clint Eastwood breaks a window in at John Malkovich's house, yet no broken glass is on the carpet.
Continuity mistake: When Clint Eastwood and Rene Russo go up to her hotel room after being in the bar, Russo was in a pantsuit and when she undressed, she was wearing a slip, which would not be appropriate when wearing pants.
Continuity mistake: When we see Frank peering out of Booth's window after the landlord calls the cops, it appears to be dark outdoors with only street lamps for light. The camera then cuts to Booth viewing Frank from across the street, but it appears that it is now daylight outside. (00:08:20 - 00:09:15)
Continuity mistake: When Horrigan uses his night stick to break into Leary's house, he smashes an upper window pane. When the camera POV switches to inside the house, he is entering through a lower window pane.
Continuity mistake: Clint Eastwood smashes the top window, but when he climbs in he goes through the bottom window.
Continuity mistake: When Frank and Lily are at the bar, then Lily leaves and Frank is playing "A Kiss is Still a Kiss" at the piano. By the time he stops playing (which you can hear) she has walked about 30 metres, but he arrives at the lift in around 2 seconds. Usain Bolt couldn't do that.
