Problem Dog - S4-E7
Continuity mistake: After Walt makes the ricin poison and Jesse is holding it in the little vial, the position Jesse is holding it changes between shots. Holding it in one hand up looking at it from side angles, to the front angle view him holding it more outstretched and in both hands.
Continuity mistake: After Walt and Junior are about to go see Hank's mineral collection, Hank's front door is still open. The camera cuts to Hank for a moment as he turns his wheelchair to move down the hall and Walt and Junior soon follow. In the next shot, suddenly the front door has closed by itself. There was not enough time for Walt to have closed it and it would have been heard if he did.
Box Cutter - S4-E1
Continuity mistake: At the Denny's, when Jesse says "Him and us, we get it" he reaches down with his right hand and picks up his knife. Sitting on the plate next to his knife is his fork. But in the next shot, suddenly his fork is in his left hand.
Problem Dog - S4-E7
Continuity mistake: Walt unloads the money that's hidden in the drinks cases. He removes the Pepsi Max case and puts it on the floor, leaving the Coca-Cola case on top. Camera changes and the Pepsi Max case is now back on top. (00:15:00)
Continuity mistake: There is an X on the back of the black Hummer during behind shots. It disappears approximately 10 seconds later.
Open House - S4-E3
Continuity mistake: While at Walt's apartment discussing the purchase of the car wash, there is a painting behind Saul that goes from crooked, to straight, and back to crooked.
Open House - S4-E3
Continuity mistake: Towards the end when Jesse is throwing money at the guy on the floor, there is a crumpled up note under the guy's tie. Camera cuts and it's gone. (00:37:30)
Continuity mistake: When Andrea drives off we can see 3 bikes parked up by Jesse's house and a car either side of the bikes. When Jesse turns to walk in one car has disappeared. (00:28:35)
Crawl Space - S4-E11
Continuity mistake: In episode 2-10, Walt installed a new gas water heater. The gas lines run from the left wall to heater mounted on the back wall of the utility room. In episode 4-11, Walt is in the Crawl Space under the utility room. The gas lines are no longer visible.
Crawl Space - S4-E11
Continuity mistake: Ted is in his house with Saul Goodman's men. When he beats his head on the furniture after he stumbled on the carpet in attempt to escape and passes out, his legs change position in two different angles shots.
Box Cutter - S4-E1
Continuity mistake: When Gus starts to walk away from where he killed Victor, he drops the Box Cutter, and we see it landing. However, after a cut to the next shot, its position has changed. It is no longer sitting on the line in the floor, and it is pointing 180° in the other direction. We can also see from Walt's shadow that the Box Cutter has moved quite a bit further away from Walt. (00:35:05)
Continuity mistake: While Gus speaks with Eladio beside the pool the sun changes on the floor between shots.
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm