Other mistake: At the beginning, when everyone is watching Shelby fighting on TV, the timer is going too slow. According to the timer, the fight ends at 2:53, which is only 7 seconds of fighting, yet the fight was way longer than that.
Continuity mistake: In the beginning, Carly gets a bowl and fills it with popcorn up to about 2/3 full. The camera cuts to Sam, then back to Carly, and the bowl is barely full. The camera goes back to Sam then to Carly again, and the bowl is 2/3 full again. Freddie walks in, and the bowl is barely full again, which Carly now fills with popcorn.
Revealing mistake: Carly, Sam and Shelby all corner Nevel in the ring. If you look in the corner where Shelby shows up, she's not in that corner until the light flashes on her.
IStage an Intervention - S2-E2
Visible crew/equipment: When Carly and Freddie are talking in the hallway about his bad luck, you can see a crewmember's shadow on the wall next to Freddie.
IMeet Fred - S2-E10
Character mistake: Carly says Shelby, ID Is 4 hrs away. It's more like 11 and a half hours from Seattle.
Visible crew/equipment: When Spencer is replacing Lewbert, you can see the studio lights reflecting off the bronze dome.
Continuity mistake: When the gang is at their apartment watching the news over how they think Carly pushed Shelby's grandmother down, there is a ladder outside their door that appears and disappears from shot to shot.
Continuity mistake: When Spencer first gets his Galaxy Wars thing, it doesn't show the sticker that says it is not a real prop from Galaxy Wars until Freddie tells Spencer.
Answer: Their father is in the military and is on a submarine and the mother is never mentioned.
Shannon Jackson