Goofs

When Kate and Morris are traveling downriver in the police launch, they pass the Queen Mary twice even though they never turn around.

When reading about his first crime, Gill picks up a copy of the New York Times. In subsequent shots, the paper has changed to the Daily News.

When the cops are racing to Mr. Gill's theater they pass the same marquee (for "The Born Losers") twice.

The opening scene shows what appears to be a red-haired Rod Steiger dressed in priest clothing walking down the sidewalk but that is actually a double. The real Rod Steiger ascends the steps a couple of seconds too early for the progression of time to be credible. This effect compromised the continuity, but it was probably done intentionally so as to hasten the scene.

The first victim is identified both in a line of dialogue and in the end credits as "Alma Mulloy;" however, when the killer reads about the murder in the paper, the news article lists her name as "Alice Mulloy."

While correct, when the killer calls the newspaper that features the article, he rages both against the lack of headlines and the lack of details pertaining to the death. The newspaperman then informs the killer that the murder occurred too close to printing for them to properly collect the information on the crime. This would explain the inaccuracy in canon, given it was the first murder and even the police didn't see the killing to be too noteworthy at the time.

With the exception of the article headlined WIDOW SLAIN, in the close-up of a newspaper page about the first murder all the stories are gibberish, with stories beginning in mid-sentence and so on.

Det. Brummel actually shoots Gil on his left side; however, when the fatal gunshot wound is revealed, it is on Gil's right side.

When on the 'yacht' and nearly at the end of the scene, (when Kate is finishing her dialog about her past), you can see the bulb of a miniature microphone attached to her hairline as she looks at Morris. After the scene cuts to him, and then back to her, she has her head tilted at an angle which then obscures the previously apparent mic. The microphone seems to be the type typical of stage shows and is perhaps used due to a broader sound amplifying microphone picking up too much surrounding noise. (i.e. waves, the boats motor, etc.)

Mrs. Brummel praises Moe's brother as the best lung surgeon in Manhattan, the Bronx, and "the Queens." Although the "the" is correct for the Bronx (officially the Borough of the Bronx and named for the Bronck family), no "the" is used when referring to Queens, i.e., the Borough of Queens.

Kupperman (played by Michael Dunn, a dwarf) repeatedly refers to himself as a "midget." Dwarfism and the physiological condition leading to foreshortened stature of people typically identified as midgets are two entirely different syndromes; anyone afflicted with one or the other certainly knows the difference.

When Sadie (the 'hooker') escorts Christopher Gill, dressed as a woman, from the bar it's obvious that a female has been substituted for Steiger because her legs are thin and shapely. She also walks very competently in heels across the road to Sadie's apartment.