When the Photographer meets his fiancée's father, he sits on the couch. In one shot, his arms are crossed over his chest and, in the next one, his arm is resting on the couch.
When the newspaper article "Photographer Burned to Death" is shown, the second paragraph of the article is repeated word for word as the first paragraph of the article "More Rigid Rules Sought In Fight To Clean City Parks".
After having disarmed Hiram Price in the darkroom of his photography studio, Arthur Mannix folds shut the knife that Price was going to use to kill him. He then walks around behind Price holding the closed knife between his hands. Suddenly, he has the opened knife gripped in his right hand without ever opening the jackknife.
At approximately 27:00, the shadow of the boom mic can be seen on the wall on the left side of the screen.