Continuity mistake: When Charles answers his cell phone after being in the bath, the hand holding the phone is wet and covered in bubbles. In the subsequent shots, his hand and arm are completely dry.
Revealing mistake: When Charles Shine arrives at the bus station in the pouring rain, the background on all sides of him can be seen to be pure sunshine and dry land. It is obvious that a rain machine covering a VERY SMALL area was being used.
Factual error: In Derailed, the train that Lucinda and Charles ride is called the "Red Line, to Union Station". The Red line in Chicago does not go to Union Station and the train they are on is a Metra suburban mass transit train. The Red Line is part of the "El" system and is part of the CTA, not Metra.
Plot hole: During the end of the fight scene in the hotel, Charlie gets hold of Dexter's gun. This gun is a Desert Eagle variant that fires either a .357, .44, or a .50AE caliber round. At the close proximity to Laroche that Charlie was, he would have taken his head clean off his shoulders instead of just taking out his eye.
Audio problem: When the cop is telling Charles that he is going to circle the block, in the wide shot, his lips don't match the words. This happens a couple of minutes before Charles dumps the car into the river.
Answer: The operator put him through to "Lucinda" on the phone because there is a REAL Lucinda that works there and Jane (who posed as Lucinda) was her temp who filled in for her supposedly when Lucinda was away. So the operator simply patched Charles' call to Lucinda's office, and Jane answered. It was either lucky for Jane that Lucinda was away at the time, or maybe Lucinda was away on business for a given amount of time, and Jane took advantage of that.