When Rezendes and Garabedian chat outside the courthouse while Garabedian eats lunch, a tall, blonde woman in a gray business suit walks past them away from the camera at the beginning of the scene, and again at the end of it.
When Sacha Pfeiffer is conducting an interview with a victim in the coffee shop, she takes notes on her steno pad. At one point only a few lines are written, the next shot shows the pad full of notes, and a third shot shows a few lines written.
When Mike Rezendes and Mitchell Garabedian talk outside of the courthouse, and Michell tells Mike about the 14-page document, Mike has his shoulder bag. The bag disappears in the next scene, when Mike rushes back to the Globe office.
When Sacha Pfeiffer is interviewing Joe Crowley in the park as they walk down an incline, a man and a young girl walk right to left in the background behind a cast iron fence. When the camera angle changes, the man and girl are gone.
When Mike Rezendes interviews Patrick, the position of Patrick's hands alternates between open and clenched, depending on the camera angle.
In the next to last scene, the two reporters show up at the Globe and park next to each other. Both of their cars have Massachusetts plates with 7 digits. Massachusetts never has more than six digits on their license plates.
In the list of cities (before the credits), the Spanish city of Granada is misspelled "Grenada".
Ben Bradlee jokingly claims to be the Archbishop of Canterbury when Mike is spooked and asks who is at his door. The Archbishop of Canterbury is the head of the Church of England, and likely would have little interest in protecting the reputation of the Roman Catholic Church.
When Mike gets the documents he wants, he exits the Federal Court House and hails a cab to take him to the Globe. "Don't take 93. Take Dorchester Avenue," he says. The cab is shown driving him along Carson Beach, which is nowhere near Dot Ave.
Some characters use the term "9/11" to describe the terrorist attacks of September 11, 2001, which were very recent. However, 9/11 was used almost immediately afterward. On September 13, 2001, the New York Times announced The New York Times 9/11 Neediest Fund, a "special campaign to raise money for the victims of the attack on the World Trade Center."
A Starbucks is visible in the background as some characters cross the street. Starbucks came to Boston in 1994, when they bought The Coffee Connection.
At least two times, Mr. Rezendes can be seen drinking a bottle of "New England Style IPA". That kind of beer was not produced before the start of 2010s.
The Globe break room/coffee shop has several products with logos introduced after 2001. For example, the small bags of Doritos have a 2013 logo, and the Pepsi fridge has the 2008 logo.
Through much of the film, a Dunkin' Donuts cup on Matt Caroll's desk features an icon for the "DD Perks" program, introduced in 2014.
Some of the keyboards and mice on various desks weren't in production when the film takes place, and some didn't even enter production for nearly a decade after the events of the film. For example, the pair on Ben Bradlee's desk were included with Dell desktops released well after 2010.
Toward the end of the movie, Boston Globe trucks hauling newspapers leave the garage. A few 2010 and newer heavy duty trucks are beside 2001 Ford F-800s.
In the middle of the movie Sacha Pfeiffer knocks on a door to interview a Ronald Paquin. She knocks on the glass in the door, but it makes the sound of someone knocking on solid wood.
Garabedian's law office has shelved copies of the Dominion Law Reports, a Canadian series. Several other law books display the CLB logo of Canada Law Book, evidence that scenes were shot in Toronto.
During the cab ride, after Michael Rezendes pays for copies of the sealed documents, he tells the cab driver to take Dorchester Avenue and stay off I-93. The cab is never on Dorchester Ave, and hits I-93 south.
When Walter Robinson and Sacha Pfeiffer leave B.C. High to head back to the Globe, they turn left. The pedestrian bridge that crosses the road is to their right.
At the courthouse, Michael Rezendes gives the clerk all of his money ($83) for copies. In the next scene, he rushes out of the building, gets into a cab, rides to the Globe building, and runs inside. Boston taxis weren't required to take credit cards until 2010. Unless an ATM was inside the courthouse, or they stopped at an ATM on the way to the Globe, he wouldn't have had any money to pay the taxi fare.
In one scene, Walter Robinson's fly is down when he steps out of his office to talk to his Spotlight staff.