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
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: This guy crossed the line and didn't even blink.
Trivia: Al Pacino's character is named Will Dormer; Dorm is the latin root for 'sleep'.
More questions & answers from Insomnia
Chosen answer: It represents Al Pacino's character planting evidence on men he knew were guilty. He was planting the victim's blood on their clothes so the evidence would be stronger against them.
In addition, there is a repeated scene where someone (Dormer) is wiping something on or off a fabric.