Continuity mistake: When they find out Lecter is on the elevator, they look down the shaft at him and there is quite a lot of blood on his back, so much that it even reaches down to his belt. However when they open the elevator shaft and the body falls down, there is only a small amount of blood on his back. (01:23:40 - 01:24:50)
Continuity mistake: When Sam is talking to the P.I about "Taking care of Max," he gets into his car and the window is up. A few seconds later, the window is down. There wasn't enough time for him to roll it down. (00:54:50)
Revealing mistake: When Ricky is shot through the chest, the blood pack is visible bulging through his shirt. (01:28:30)
Continuity mistake: At the start of the quicksand scene, Campanella is carrying his jacket over his shoulder in the initial shot but not in the next one. (01:01:21)
Revealing mistake: Uncle Ghost sets a headstone in front of Ricky and tells him to break it with his energy. He breaks a small corner on the headstone with his hand to demonstrate, however it can be noticed that there are visible cut marks on the corner that he breaks off before doing so, revealing that the corner had already been cut off and reapplied to make it easier for Uncle Ghost to chop it off. (00:20:55)
Character mistake: Whoever wrote the "homicide" memo on the captain's corkboard spelled "homicide" wrong.
Continuity mistake: Towards the end of the movie, when the mob appraiser has verified the medallions are authentic, he is wearing two white gloves. He then asks if he can leave. When he stands up and gathers his things, he has only one glove on. The shot cuts away. When it cuts back to him, he has two gloves on again. (01:32:50)
Revealing mistake: When Angelo is shot in the back at the airport, you can see a pack underneath his shirt when he is rolled over by Utah. (01:39:44)