Continuity mistake: Duke falls back on the glass table and spasms. His left hand is on top of the right one, but as he rolls over the hand switched place. (00:59:50)
Continuity mistake: Miles fixes himself a drink saying "fake it till you make it." He then joins the others, but look at Birdie Jay and her assistant; completely different poses between shots - Kate Hudson is even dancing with and then without her massive glass. (00:58:40)
Continuity mistake: Miles seems to have pep talked his friends into staying for the rest of the weekend after the momentary crisis brought by the premature end of the murder mystery. He says "You're staying" to Lionel, who is holding his glass with both hands, then suddenly with one hand, the other hand being on his knee. (00:58:25)
Continuity mistake: When Claire drunk-staggers down the steps after Andi left the party, she holds chips in her hand, or does not, depending on the camera angle. (00:57:10)
Continuity mistake: Andi leaves after Duke's words. He walks down the steps, and Birdie looks at him, drink in hand. Depending on the shot, the left hand isn't or is on the straw. And a moment later Miles and Blanc join back the crowd, and her hands switched place, drink supported by the left and right hand on the straw. (00:56:55)
Continuity mistake: Addressing "the elephant in the room", Claire springs up from the couch and flailing her arms she shouts "Nothing about any of this is fair." Notice in this full view of the room that her jacket is off the pillow it was resting on in the closer angle. (00:54:45)
Continuity mistake: Duke tells the others that he is leaving the next day. His girlfriend, on all fours, seems to complain. Duke makes a weird noise, and then in the shot from the top he says that she can stay. However, his grip on the glass is different. (00:54:00)
Continuity mistake: Lionel and Duke are looking at his phone. Birdie walks behind them saying, "Thank God for Benoit Blanc." She passes the same spot twice, Lionel each time holding the rim of the glass in a different way. (00:53:50)
Continuity mistake: After claiming his iPad, Blanc cautions Miles that "for at least one person on this island, this is not a game." His grip on the top of the chair changes between shots. (00:52:10)
Continuity mistake: At the beginning of the dinner, during Miles' reminder that a murder will be committed, the movements of the guests don't match from cut to cut despite Miles speaking continuosly (for instance, Lionel in close-up strokes his beard and yet in the next shot he isn't and puts a drink down, and same for Birdie, etc). (00:45:50)
Continuity mistake: The first time Lionel confronts Miles about Klear's safety and his involvement, Miles interrupts him pointing his finger at him; it's the palm of both hands in the next shot, and again the single finger when it cuts back to the earlier angle. (00:44:45)
Continuity mistake: When Miles starts telling Blanc about Klear with a K, there's a close-up of Claire staring into space. The glass is held up higher in close-up, she already dropped it lower before the cut. Even more obvious a few moments later when the same angle is recycled after Lionel causes a loud noise. (00:44:20)
Continuity mistake: When Peg nearly drops the glass statue as she observes the override button for the Mona Lisa, she fumbles in different ways between shots; the close-up begins with her left hand practically tucked under her armpit. (00:42:20)
Continuity mistake: When Miles shows Birdie the Hummel figurine that acts as override button for the Mona Lisa, her grip on the tropical cocktail changes between shots. (00:42:10)
Continuity mistake: Miles gives Andi her glass; meanwhile in the background, Claire calls his attention. You can see she is holding her Pinot in her right hand, but the glass switches hand at the cut. (00:41:20)
Continuity mistake: Benoit Blanc chokes on the tamales, which turn out to be spiced up by Jeremy Renner 's hot sauce. He picks a bottle and, still coughing, walks up to Miles. As Miles says "pick your poison", you can see there's no bottle in his right hand, but it is back in the reverse shot. (00:41:00)
Continuity mistake: Andi starts lashing out on the Disruptors; when says that everyone knows who financed Claire's campaign, Kathryn Hahn 's hands switch position on the laptop; her right hand is on top of the left and viceversa. (00:35:15)
Continuity mistake: Andi slow-claps Miles ' speech about the disruptors. She gives her half-drunk bottle to Peg, who is holding it by the base, but in the next shot has one hand on its neck. (00:34:55)
Continuity mistake: As Blanc walks away from the fax the first time he sees it, Birdie Jay is sitting with her legs across Miles ' lap, bathed in sunlight. In the next shot they are in the shade. (00:31:00)
Continuity mistake: After the small scene with Duke firing his gun in the pool, Birdie's assistant urges her to go talk to Miles. Kate Hudson's hand goes on/off the hat between shots several times in the part of the conversation before she looks at Whiskey and him. (00:29:40)
