Continuity mistake: After the will was read, Mrs. Boynton tells the 'children' that she has a lovely surprise. Carrie Fisher in the wide angle changes position leaning her chin against the back of her hand, and repeats the gesture in a subsequent shot. (00:04:15)
Continuity mistake: The family is sightseeing London, and the eponymous Tower. A yeomen warder points up; Nadine is looking where he's pointing assuming a different position in the two shots, with the sunlight being as well different. (00:05:45)
Continuity mistake: The Boyntons are in Venice and looking at the Rialto bridge. Ginevra in the wider view of the staircase puts her hand down from the railing, and the hand is back up on it in the next. (00:07:50)
Continuity mistake: When Ginny tells the others that Cope is in Trieste, the couple in the background changes position and the woman and the man switch places. (00:09:25)
Continuity mistake: Hearing that Cope is around, Nadine asks "He's not here, is he?" as she stands up from the bench. Without her handbag, that is suddenly there at the cut. (00:09:50)
Continuity mistake: Lady Westholme asks her travel partner Miss Quinton "What's the matter" since she keeps rummagining inside the bag. It's an instantaneous exchange, but between shots the couple of passersby (man with a suit and red flower, woman with an azure dress) have advanced through the street by a great deal. (00:10:45)
Continuity mistake: Nadine reads Cope's inscription on the cigarette case in close-up. One of his fingers is on the right side of the box, and it's absent in the next angle. And when he closes it, Carrie Fisher's right hand which was lowered, is at bosom level. (00:12:00)
Continuity mistake: When Miss Quinton finds her lost cigarette case, Dr. King in the background is laughing. She changes position, but in Poirot's reaction, which should be in perfect continuity since the quarrel does not pause, she is sitting with her arms perfectly still. (00:14:00)
Continuity mistake: Poirot's stomach is upset by the effluvia of the 'dead duck' that some random prankster exposes in front of him. Visible fumes are in front of Peter Ustinov, immediately gone in the wider angle. (00:14:25)
Continuity mistake: Dinner on the ship; Miss Quinton takes her nameplate just as a waiter is serving the woman next to Lady Westholme. The man between them is looking in opposite directions in the two shots. (00:14:30)
Continuity mistake: Ginevra just left because her mother sent her to bed. Jefferson Cope approaches Nadine. Look at the lady sitting at right of the table behind the Boyntons. Right arm on the table, left arm on the chair. Cope brazenly asks Nadine's husband if he doesn't mind, and both her hands are on the table. (00:15:45)
Continuity mistake: When Poirot moves across the beach volley (ship volley?) court, a girl in an ample blue skirt is moving left to right towards him, and is completely gone at the cut. (00:16:45)
Continuity mistake: Nadine tells her husband Lennox that they should disappear when they hit Jaffa. Lennox asks her "What do we use for money", his left arm folded, hand up. Close-up, and it's hanging all the way down. (00:17:30)
Continuity mistake: When Dr. King approaches Poirot with the scopolamine syrup, in close-up Ustinov's hand is a bit lower on the glass, and, the woman in the background, who had her hand up, has it down; not that she has a choice, since you can tell she is forced to keep firmly her hand down her side to hold in place her skirt (the wind would otherwise make it flap around all over the place). (00:17:55)
Continuity mistake: Emily Boynton tells her lawyer to stop the affair with her daughter-in-law and leave. He threatens her (not quite clear with what) and tells her "I want those children of yours to have a chance." Notice Emily's shadow, perfectly clear under the window. Next shot, and there's no shadow. (00:19:15)
Continuity mistake: On the ship, Emily plans to kill her lawyer who just left her cabin. She holds the bottle of heart medicine, and in close-up the fingers are positioned differently on it. (00:20:05)
Continuity mistake: When Emily picks Jefferson's glass, she is holding the bottle of expensive champagne at the bottom of the cloth, and at the top in close-up. (00:22:25)
Continuity mistake: When Emily pours champagne for Raymond, David Soul is smoking a cigarette he didn't have a moment earlier. (00:23:00)
Continuity mistake: Lennox pulls out of his jacket the infamous cigarette case. In the reaction shot, Carrie Fisher's fingers are curled, in the wider angle they are straight along her cheek. Notice in this shot also Carol, with her arms down her sides. Next shot and she has her hands clasped. (00:23:45)
Continuity mistake: After the beatdown, Cope clutches in hand his ill-advised gift to Nadine as he says "It was just a figure of speech." It's closed, but when he gets up it's open. (00:23:55)
