Sammo

Continuity mistake: When Christine looks at Yamada before falling unconscious, the sword scabbard is right next to her at the bottom of the frame, but it's at greater distance in the previous shot and rest of the movie (like when her boyfriend wakes her up), except when the black ninja rises, when it's gone. (01:19:15)

Sammo

Continuity mistake: When Christie draws her sword and brings it down over her stalkerish boyfriend (but alas, doesn't kill him), he clings to the bedframe with both hands, but has just one arm raised in the second shot. You'd think the arm is down on the ground for good as shown in the room view too, but in the very last shot he's again gripping the frame. (01:15:25)

Sammo

Continuity mistake: When the good ninja KOs the cops in the car, the hat on top of the last one is tipped in an entirely different way in close-up and wider angle. (01:13:10)

Sammo

Continuity mistake: During the close-up of Sho Kosugi looking languidly at Christie's boyfriend when the cops are taking him away, look at the blonde moustached cop behind him. His face is in the shade, and then suddenly in direct sunlight at the cut. Same for his fist as he holds the gun in this second shot; direct sunlight on it, shadow during the next close-up on the ninja. (01:11:25)

Sammo

Continuity mistake: The guys are discussing whether to take Steve's job or not. When Daric says "Let's do it", Ben's hand stars on the cue at a much lower point than it had reached in the previous shot. (01:11:15)

Sammo

Continuity mistake: When Stephanie's boyfriend at the court tells Ben "It's going to break the cycle", he is holding the basketball close to his body, but as the angle changes, he's holding it on his upward palm. (01:09:25)

Sammo

Continuity mistake: When in Vegas the guys bring a "Rachel" in the room, Ben is looking at his book, no papers in hand, but as she leans against the bed he's suddenly holding some. (01:04:50)

Sammo

Continuity mistake: After the confrontation with Stephanie's boyfriend, there's a scene opened by Ben in voiceover talking about 'scams'. In the long shot we see Virgil greet the guys in the blue car while holding a skateboard. Closer angle, no skate. (00:43:00)

Sammo

Continuity mistake: The situation at the party escalates quickly. Darin knocks the jock down with his gun while a rabid Virgil steps in to kick him on the ground. The gun swaps hands between shots. (00:38:00)

Sammo

Continuity mistake: After one of his coworker smashed a gravestone with his baton, a second cop gets close enough to the ninja to grab his/her arm. The ninja punches him away with a blow from right to left, which is not in continuity with the previous shot. (01:06:35)

Sammo

Continuity mistake: When Christie's wardrobe tries to suck her in, the items that are being drawn in and therefore slide on he floor, change between shots with no logic. For instance, we see an empty metal vase, then the same vase with marbles, then just the marbles. (01:02:00)

Sammo

Continuity mistake: The priest is praying and unknowingly almost exorcises the evil ninja, he is holding his onusa (the stick thingy) with one hand or both hands, and when they both speak Japanese the grip of the left hand differs between angles. (00:50:00)

Sammo

Continuity mistake: Once Christie is all tied up, the ceremony begins. Miyashima is holding a pipe that faces opposite ways between shots when he holds it with both hands. Still holding it with both hands he brings it to her lips, then in close-up suddenly he holds it with just one hand. (00:49:20)

Sammo

Continuity mistake: In the opening kick of the billiard fight, Christie's foot touches the Miller time lamp suspended over the pool table, which logically begins to undulate. In the next shot, the lamp is perfectly still and untouched. Similar mistake a minute later at the end of the scene; when she leaves using the window, the lamp is moving but almost comes to a complete halt, only to be back swinging wildly at the cut. (00:38:00 - 00:39:00)

Sammo

Continuity mistake: The scene where Christie eventually succumbs to the arcade machine begins with her top bearing a huge sweatstain throughout the whole length, but ends with the stain considerably reduced (to be fair, there is no frame of reference to categorically exclude that laser beams emitted from bootleg cabinets possessed by evil ninja demons double as dryers, but we can assume it's not the case). (00:33:15 - 00:35:20)

Sammo

Continuity mistake: Christie triggers Secord's odd tomato juice fetish, and they have sex. She wakes up and checks out the katana in the wardrobe. The sword floats shaking in different ways depending on the camera angle, and the lighting wildly differs as well. (00:29:00)

Sammo

Continuity mistake: Christie battled the musclehead molesters and her love interest didn't lift a finger to help. He then abuses his cop powers driving her around without her consent; the boulevard he's driving through changes between shots. (00:25:15)

Sammo

Continuity mistake: After the aerobics class, Christie tells her friendly cop stalker that coffee is bad for his health. In that particular shot she has a sweaty lock of hair sticking to her neck. In the rest of the scene her bouffant 80s hair is styled differently. (00:22:55)

Sammo

Continuity mistake: When the cops surround the black ninja 'mortally' wounded and still find a way to get killed, the dangerous ninja is in full sunlight in the first angle, then he's in the shade. (00:10:45)

Sammo

Continuity mistake: After failing to outrun the patrol car on the dirt road (without attempting to lose it in the tree or anything), the ninja turns around and jumps over it. The younger cop in the passenger seat raises his hand and sticks it out of the window; it's there in two shots, and not in the close-up. (00:06:45)

Sammo