Revealing mistake: When Betty goes into labour in the night and goes downstairs with her suitcase, she tries opening the front door. You can see it moving with her pulling. And then when Frank goes to climb out of the window to follow the key, he climbs onto the sink, which almost rolls away, which reveals the fakery of the set.
Visible crew/equipment: In the first scene, the shadow of the mic can be seen on Mr. Wheeler's Santa Claus outfit.
Jessica's First Christmas - S2-E7
Revealing mistake: At the final rehearsal for the church nativity play when Betty first comes on stage with baby Jessica wrapped up in a blanket and places her in the manger, it is obvious that Jessica is actually a doll.
Revealing mistake: When Frank ties the bedsheets together to the sink, he ends up pulling the basin off the pedestal. Surely that would cause a flood, but we don't see any water come out at all.
Continuity mistake: When the wardrobe falls onto its side you can see that Frank hasn't broken the base. However, when he hides in it out on the landing, he is able to walk about inside it, moving the wardrobe with him.
Continuity mistake: When the other guest goes out into reception and asks "Mr. Bedford, all quiet?" in one shot he is wearing his dressing gown, but the next he's just wearing pajamas.
Continuity mistake: When Frank and Betty place their wardrobe down, it nearly goes through the floor because the boards are damp. First Frank tries putting wood under it (from the drawers), then after breaking the wardrobe door he swaps the wardrobe with another guest's. They place that wardrobe in the place where the damp boards were without putting any wood underneath, and don't seem to have any problems with the damp floor.
Revealing mistake: When Frank and Betty move the wardrobe, the walls wobble.
Revealing mistake: Before Frank pulls the mat from under the wardrobe and tears it, you can see the mat is already torn and placed back together.
Audio problem: After Frank has torn the lino by moving a bed, he tries to neaten it up only to tear it more. The sound effect is not in line with the tearing of the lino.
Continuity mistake: During the roller skate sequence he is wearing a jumper, then before he enters the shop he is in only a shirt, then back to a jumper inside the shop.
Jessica's First Christmas - S2-E7
Continuity mistake: When Frank is demonstrating his star trap to Father O'Hara, Frank comes up through the stage floor too fast and grabs hold off a length of material stretched across the top of the stage which falls down onto the stage floor when Frank falls, but in the following shots of the scenery collapsing this piece of material has disappeared.
Jessica's First Christmas - S2-E7
Revealing mistake: The walls of Frank and Betty's bedroom wobble when the door is shut.
Jessica's First Christmas - S2-E7
Visible crew/equipment: When Frank asks Jackson if he can work the crane, there is a boom mike shadow on the wall to their left.
Visible crew/equipment: Just after the Spencers have arrived at the airfield you can see the crew reflected in the windows of their blue Citroen.
Continuity mistake: When Frank first gets into the plane cockpit he leaves the door open - it soon shuts by itself after a camera angle change.
Visible crew/equipment: Crew members can be seen in the background and behind the trees when Frank is on the roof of the runaway mini when it is on the pavement and knocks the walking stick out of the man's hand.
Revealing mistake: When the flying saucer crashes down onto the wishing well, it is obvious that the Father Christmas in the saucer is a dummy.
Continuity mistake: Mr. Finney is explaining the mirror signal manouver procedure to Frank during his driving lesson in the white Mini. While they are parked, the shots from inside the car show a line of parked cars behind the white Mini. But when Frank moves off, the shots from outside the car show no cars parked behind the Mini.
