Patzer

Ronnie is supplied with a torn-off piece of printed stationery from "Seacliff Lodge," but the sign at the main entrance to the facility shows its name as "Seacliffe Lodge."

(at around 25 min) When Carlotta and Ronnie are in the den at the mansion, she gestures with a knife pointed at Ronnie's face. In the shots from the side, she holds the knife with her thumb upwards. In shots from over her shoulder, her knuckles are upwards.

Cryolite is an ore of aluminum, not uranium. Its primary use is in the electrolytic processing of aluminum-rich bauxite ore, but it's so rare that it has been practically mined to extinction.

A shot of the plane landing is flipped: the lettering on the tail is backwards.

Willie, tricked by Ronnie, bends apart the steel bars of the window in Ronnie's room. When he removes his hands, the bars return slightly to a straighter position, indicating they are made of pliable rubber.

After Jackson finishes photographing Mrs. Fong's baby, he takes his camera into his darkroom to develop the film and make prints. His camera is a twin lens reflex that uses a roll of film. When he returns from the darkroom, he carries what appears to be several individual plates, presumably containing one negative each. These would have been taken with a much older style camera that would take one plate/negative at a time.

As Ronnie and Carlotta attempt to escape from Seacliffe, and she wonders if the villains have taken his car keys (before they creep down the staircase), a long pole (to the left of frame) hurriedly retreats out of shot.

As Mrs. Fong tells Ronnie in the corridor outside his office that she doesn't want her money back but the picture of Sonny smiling for the first time, a large shadow of the camera equipment is cast across them.

Most of the movie consists of a flashback told from Ronnie's perspective, but he couldn't have known about some of the scenes, because he wasn't present for them (e.g., the villains talking by themselves).