Continuity mistake: In the scene with Poirot freaking out about the 7 asymmetrical pastries, in the side view Poirot's water glass is far away from him, past the bottle. It is closer to him, to the other side of the bottle, in the overhead view. (00:12:15)
Continuity mistake: When Captain Collins sits down at the computer console early in the film, the mouthpiece on her headset constantly changes position.
Continuity mistake: Riley puts the red hard-covered book and two others into the box, but puts the same books into the box when Gabby starts to help. (00:13:35)
Continuity mistake: At the beginning of the flashback in Greece, the pieces on and around the chessboard change. When we first see the board, most of the white pieces are on the back row, and then we see 2 pawns removed. In the next shot, when the king is knocked over, some of the white pieces on the back row have moved and there're several pieces that have been removed.
Continuity mistake: Francis pistol-whipped Leonard and - although there initially was no red mark - a red mark could be seen when Leonard attended to Richie's wound. Not long afterwards, the red mark was gone (but should have still been there). (00:21:35 - 00:35:06)
Continuity mistake: The street view/scenery when Emily is walking down the road outside of her new apartment becomes quite different when the camera shifts to an aerial view (showing more cars and buildings, fewer trees along the right side of the road, and mountains in the distance instead of the nearby ocean). (01:29:09)
Continuity mistake: While driving to Harper's house, Jordan did not have the sun visor down, but it was down when she was backing up after she passed Harper's house, #237. The sun visor was not down when Jordan was going down the driveway to the house. (00:17:15)
Continuity mistake: Kol shouts, "Stop the car!" Adam slams on the brakes from a cruising speed, yet miraculously, the car is bumper-to-bumper with a parked red SUV. When Kol gets back into Adam's car, the red SUV should be visible. However, outside of the windshield, there is a white blur. A car drives close by on a perpendicular road that wasn't there before Adam stopped. (00:15:48 - 00:16:20)
Continuity mistake: Inside the building, Nina is at different distances from the man on the bench, ranging from about one body's width to a few widths away (while accounting for her limited movement). (00:15:15)
Continuity mistake: When Maren is talking to Sully about Lee, whilst Sully is saying "Follow your nose or he follow his?", Sully's hands are at his side. When the shot cuts, his hands are clasped behind his back. (01:30:48)
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: 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.