Superintendent Halloran identifies the key Bible quote (given as the somewhat bowdlerized and abridged "And Aholah played the harlot when she was mine; and she doted on her lovers, and they discovered her wickedness and they slew her with the sword; and she became famous among women; for they had executed judgement upon her") as coming from Ezekiel 24. In fact it appears in Ezekiel 23 - though this may be an attempt to trip up the murderer he suspects is in the room with him.
Mark Roper takes a shower at the Oakley Park Country Club. It is evident that he is showering in a pair of shorts, and implausibly dries himself enough to be able to put on his shirt and trousers (and presumably underwear) around seven seconds after leaving the cubicle.
When John Mills is looking through the photographs in the murdered girl's room, the page from the bible is folded. It drops to the floor and it is unfolded, in fact it isn't creased and when he picks it up and you can hear him unfolding it before reading it
At about 95 minutes Mills admits that his evidence would not convince 'the Public Prosecutor'. In English and Welsh law there has never been such a term. Since 1908 it would have been the Director of Public Prosecutions for any 1957 police officer.
Halloran allows himself to be taken for a turn around the Oakley Park boating lake by Elizabeth, but the camera/background shakes more violently when on him (physically rowing the boat in the location footage) than when framing his more sedate companion (in footage shot separately).