Continuity mistake: When Viktor has been arrested for "murdering" Simone, he is in a room with a man who walks between two peg-lines, with magazines and posters featuring Simone on them, pegged up. Between shots the magazines pegged up change, ie. When the man walks along in a closeup saying "This is fake, fake, fake, fake, fake..", he walks past a big poster of Simone standing, posing in a leather suit, and to the viewers right of this poster, a magazine called "Variety" and then next to that a magazine called "Simone" are pegged up. Then when it cuts to a wideshot, these two magazines are totally different ones, as you can tell by the front cover picture / layout / text etc. Other magazines change and move around too. (01:34:20)
Continuity mistake: When Viktor is talking to Simone, sipping his Jack Daniels he sets it down and the label is pointing away from him - the next shot the label is pointing towards him.
Continuity mistake: At the end of the movie we see Viktor sitting on the couch with Simone. Watch closely at the very end, he puts his hand directly on the couch. This would have caused it to appear to the audience to go through Simone's leg.