Factual error: Al Pacino is the subject of an internal affairs inquiry in Los Angeles. It's unlikely a police officer under investigation in L.A. would be sent to Alaska to work on a murder case. Police officers under investigation are routinely given desk assignments until officially cleared and allowed to return to active duty.
Insomnia (2002)
1 factual error - chronological order
Directed by: Christopher Nolan
Starring: Robin Williams, Al Pacino, Hilary Swank, Martin Donovan, Oliver 'Ole' Zemen
Continuity mistake: In the scene on the ferry, when Williams and Pacino are talking, in the shots showing Williams, Pacino is facing the center of the ferry frequently, while immediately afterward in the shots showing Pacino, he is facing Williams again.
Will Dormer: You shouldn't knock misdemeanors.
Ellie Burr: Oh, but it's small stuff. It gets so boring.
Will Dormer: It's all about small stuff. You know, small lies, small mistakes. People give themselves away, same in misdemeanors as they do on murder cases. It's just human nature. Aren't you gonna write that down?
Trivia: Not a mistake, just something nice to notice: "Dormer" sounds like "dormeur" that is to say the French for "sleeper".
Question: At the end, Maura Tierney is lying on Al Pacino's bed, having a nap/sleep. Are we then to presume they had sex before Pacino went to the airport to catch his plane back to LA?
Chosen answer: Since no answer is given in the film, the audience must make their own assumptions.
Answer: OMG, even my 7-year old daughter realised that the scene was made for the exact opposite reason. Dormer and Tierney talked "all night" and Tierney was sleepy. Dormer and Tierney had a genuine (if short-lived) friendship. Her sleeping on his bed only referred to their trust in one another. His bed had no metaphorical meaning. In fact, it was Ellie who developed a strong crush on Dormer. A crush that interfered with her objectivity as a policewoman.