Continuity: In the end of the diner scene Jude Law fires after the car with Sullivan and his son. A bullet goes through the rear window but not through the windshield. We see the bullet path go by Tom Hanks' head. Regardless, there's no bullet hole anywhere in the car afterwards.

Factual error: Tom Hanks is driving his car over a bridge in downtown Chicago in 1931. In the background is the elevated train structure. An aluminum bodied train passes on the trestel in the background. This aluminum bodied train is of 1980's contruction. In the 1930's the train cars were of wood construction and painted brown. I remember riding them for they were still in service in the 1950's.

Revealing: At the end when Sullivan is shot in the back while looking out the window, you can see blood come through the front of his shirt, meaning the bullets must have exited his body, yet the window he is standing in front of isn't shattered by the bullets that had passed through him.

Factual error: In the diner scene, the assassin (Jude Law) pours sugar in his coffee. The bottom of the sugar dispenser is exposed to reveal the bar code label. Bar codes were not used in 1931.

Continuity: At the end of the movie when Michael gets shot in the back, blood squirts on the window. Afterwards, when Michael dies and we see his son holding him in the room, there is no blood on the window.

Factual error: In the scene when Mike Sullivan is shown sitting in his classroom, the American Flag behind him has 50 stars, which it wouldn't have done in the 30's.

Factual error: The film is set in 1931. In several scenes the character of Michael Sullivan Jr. played by Tyler Hoechlin is seen reading a "Lone Ranger" storybook. The Lone Ranger began on radio in January 1933 - print, movie and TV appearances of the character are subsequent to this.