Best thriller movie mistakes of 1975
Revealing mistake: When the shark bursts through the window of the cabin, in each of the shots facing Brody, including when he shoves the air tank into the shark's mouth, the glistening water is visible in the window's reflection behind Brody. The shark's reflection is never seen behind Brody, despite the shark's massive size in the small cabin. Bruce must have had the day off during Roy Scheider's takes.
Continuity mistake: At the Zurich sanction when Jonathan kicks the killer out of the window, just before he kicks him, look at the window. This window has two panes of glass that open outward, with the latch in the middle, but a view from the outside shows that it's a single window with one pane of glass in it, not big enough for two panes.
Factual error: Two passengers play a piano/vaudeville routine in the lounge for the officers and passengers. During its initial season (1936) Hindenburg had a lightweight aluminum baby grand piano on board. However, passenger accommodations were expanded over the winter of 1936/37 and the piano was removed. There was no piano aboard Hindenburg on her fatal flight in May 1937.
Continuity mistake: When Doyle arrives at the dock at the beginning of the movie, we see Doyle from behind. A boy with a yellow shirt and a girl with a flower dress pass him on his right side. However, there is a change of shot, and now we see him from the front, and behind him we see the boy and the girl, but instead of being at his right side, they're at his left.