Visible crew/equipment: During the beginning of the film whilst Tara is walking through the house, in the window to the right of the front door the camera guy can be seen during both scenes that take place during the hallway shots.
Revealing mistake: When Gerard Butler is driving to the warehouse to find Frank, the speedometer and the rev counter are on 0.
Suggested correction: I could not see Will's speedometer or tachometer (RPM gauge) during his drive to Frank's. What I did see (and believe you saw) was the patrol officer's instrument panel while he was parked along the road using radar. This was before he pulled out to chase Will's speeding SUV, so both gauges should have been on the far left (i.e, on "0"). [00:46:28].
Factual error: On July 4, Kya waits for Tate, watching the sun set and the fireworks at night. She falls asleep on the shore and wakes up in the same position, watching the sun rise. So the sun sets and rises in the same position. (00:55:40)
Factual error: A .22 shot would be 120-140 dB, muffled with a pillow down to 100-120 dB. Only one person heard the second shot? No one heard the third? Plus at the end there's no way a .22 could pass through a male chest cavity, and halfway into a female chest cavity - it's too low power.
Other mistake: The white horse looked very uncomfortable from what appeared to be an improperly placed bit (too far back and/or misaligned in its mouth). The handler should have noticed something was wrong and intervened. (00:20:30)
Character mistake: Laura is on the floor, screaming and exhibiting bizarre behaviour, so Dr. Rose Cotter goes to the wall phone to call for help. Instead of maintaining observation and continuing an evaluation of Laura, the psychiatrist faces the wall while making the call and even stares at the wall for a couple of seconds after hanging up. A patient's body language can/do help make a diagnosis, so the psychiatrist should keep her eyes on Laura. (00:11:20)
Other mistake: At the end the camera bulbs would not work as they are electric. This is proven when the music starts after the creature leaves the area. (02:01:00)
Continuity mistake: Jackie holds her pen as she takes notes. Next, her pen is set on the legal pad and her hands are on her lap (below the table and pen). The camera returns to Jackie, and she continues to hold the pen as she takes notes the whole time. (This allows for other questionable variations that could occur off-screen, if enough time.) (00:38:57 - 00:39:29)
Continuity mistake: While Ben is talking to Eloise, his glass of alcohol is about three-fourths full, but when he lifts the drink to his mouth, his glass is almost empty. (00:07:20)
Continuity mistake: The gingerbread man cookie falls into the coffee cup, and the top is barely below the rim. Looking into the cup, the top of the cookie is much further down but does not fall this fast. The coffee cup is about half-full. Jackson takes a drink. The cookie does not interfere with the flow of the coffee into Jackson's mouth. When Jackson lowers the cup from his mouth, there is no visible cookie. (00:08:20)
Plot hole: The prosecuting attorney told William "this case [murder of Kat] is so paper thin the judge's probably gonna throw it out" but William could try to convince the D.A. to take it to trial. In addition to circumstantial evidence against Danny and his pending charges (resisting arrest, assault on a police officer, possession with intent to deliver, and parole violations), the random, unprovoked, senseless murder of a teenaged girl would be high profile - such cases are most likely to be prosecuted. (00:09:34 - 00:10:36)
Other mistake: Si was kneeling on the floor, stabbing his upper left arm and blood was gushing out. After he moved his right arm with the bloody knife to his right side, the aerial view did not show any blood on the floor, across his thighs/pants, or even dripping down his left arm. (00:27:50)
Factual error: When Laura dropped Cody off at school, there was one boy (far left side of screen) wearing shorts. In 1950s (and later) California, boys were required to wear long pants to school (no shorts!) and girls had to wear dresses. (00:15:26)
Continuity mistake: Young Norma Jean is shown a photo of her father placed at the head of her bed. It has him facing right and there is a large white defect in the photo at the upper left corner. When the photo is "talking" to her in a succeeding scene, he is facing left, and the defect is on the upper right corner.
Factual error: Rose's legs were paralyzed, but when she was dragging herself on the floor, she occasionally used her feet to help propel her body forward (and moved her feet downward) - something she would not be able to do if her legs were paralyzed. (00:33:40)
Continuity mistake: Solomon put the rope around his waist underneath his coat, but when he was walking through the woods the rope was tied over his coat. Also, the knot would start out in the front of his left side but change to behind his back even though the rope was loose (not taut) behind him. (00:01:55 - 00:02:26)
Continuity mistake: The police inspector threatens Diana implying that for a blind woman like she is, life in prison would be a nightmare. He does that casually leaning against the wall with his hand held up high above his head. In the reverse shot, his hand is chest-high. (00:38:15)
Continuity mistake: At the clothing rental store, Maigret puts the box with the victim's bloodied dress on the counter. He leans against the counter with closed fists, but in the next shot, we see Gérard Depardieu leaning with his open hands flat instead. (00:17:00)
Continuity mistake: Gabby walks some distance from the Cunningham's house to neighbor O'Connor's house, but she is suddenly talking to Barbara much closer to the Cunningham's house. Back views of Gabby show her near Barbara's front door, but side views show the Cunningham's house behind Gabby and Barbara. (00:16:15 - 00:16:41)
Continuity mistake: When The Artist is talking on the phone to Detective Mary Kelly, sometimes his long, wavy hair behind the phone is flat and other times fluffy (extending wider than the phone). (00:14:45)