Continuity mistake: Caleb hits Melanie with a piece of lumber and she falls to the ground. She falls with her feet towards Caleb, but in the close up (and each scene after) her head is now towards Caleb.
It Wasn't Meant to Happen - S2-E20
Factual error: Gabrielle visits Dale, her adopted child's natural father, at his high school and interrupts a pep rally for the football team's upcoming game. Dale, the team's Quarterback, even says that in the last game, he threw for 260 yards. The problem is that it is spring. Dale has just returned from a week in Florida for Spring Break. Football season is over. Basketball season should be over or ending soon. There couldn't have been a pep rally if the season is over.
It Wasn't Meant to Happen - S2-E20
Continuity mistake: While Susan and Edie are at the Hooters style restaurant, the amount of beer, and amount of head, in Edie's glass changes from shot to shot.
There's Something About a War - S2-E13
Continuity mistake: When Lynette and Tom are talking, Tom says "Really I got the job?" and puts down the newspaper he was just reading. In the next shot we see Lynette and you can see Tom is still holding the paper and puts it down again.
Revealing mistake: Baby Lily is supposed to be a newborn, but she must be like 4 or 5 months old. When she is supposed to be tucked in a blanket, it's very obvious that they're using a doll that is much smaller than the actual baby.
There's Something About a War - S2-E13
Continuity mistake: As the nurse is talking to Susan about the operation, the folding of the paper the nurse is holding on the clipboard changes between shots. First it is half folded over, the next shot it has been folded right over and is being held right down. After this shot it changes again and is now folded back without her moving the paper.
It Wasn't Meant to Happen - S2-E20
Continuity mistake: When Gabrielle goes over to Dale to get him to sign the custody form for the baby; the sheet of paper is all creased and folded up. But when she shows it to Carlos it is not creased at all.
It Wasn't Meant to Happen - S2-E20
Continuity mistake: At the Hooters style restaurant, Edie intentionally trips the waitress. When the waitress falls, there is a lettuce leaf in the small of her back. When she starts to jump up, the lettuce is now at the base of her neck.
Audio problem: When Eva Longorea drives home her husband is talking to a man. Their lips move, but no sound comes out.
Factual error: It is the weekend and Valentine's Day. We see in the following episode that it's 2006 and their calendar matches the real one, but Valentine's Day was on Tuesday that year.
Continuity mistake: When Lynette sits with Gabrielle in the kitchen discussing the kiss, they're drinking shakes. Gabrielle is either holding her shake or it sits on the counter in front of her, repeatedly, depending on camera angle.
Coming Home (a.k.a. I've Got You Under My Skin) - S2-E10
Continuity mistake: When Carlos is about to be vaccinated, him and Gabby sit in the waiting room. Throughout their conversation watch Gabby's arms. At one point she has them down beside her, then in the next she has them folded. In the following shot they are down again, and in the next one they are folded.
You'll Never Get Away From Me - S2-E3
Continuity mistake: Gabrielle sits down with some letters in his hands then places them to his right side while she is talking to John, first the letters are mixed up and then in order. (00:26:30)
Continuity mistake: When Gabrielle and Carlos go out of the house to investigate what is happening when the Chinese maid starts shouting, they close the door behind them. In the following shots the door is open again.
Continuity mistake: When Bree is talking to Lynette about what Lynette would say to Andrew's lawyer, in the shots facing Bree her right hand is on top of her arm, but from behind, her hand is under her arm. This happens again in the next shots.
We're Gonna Be All Right - S2-E12
Factual error: When Susan has an MRI scan she walks into the scanning room with the radiographer wearing jeans and an underwire bra, both of which are not to be worn in the scanning room due to the power of the magnet which would pull her towards the scanner. She also is carrying her handbag which also would be pulled against the scanner. She is left fully clothed as she enters the scanner, wearing the under-wire bra would pin her down to the scanner. A coil must also be wrapped around the area being looked at so that images can be obtained, she did not have anywhere near her body. The radiographer also had pens in his pocket which would easily fly out and towards the scanner.
Continuity mistake: After Caleb thinks he has killed Melanie, he wipes his right hand across his T-shirt several times and leaves one bloody handprint. When he gets home, there are now several bloody prints from his right hand on the T-shirt.
There Is No Other Way - S2-E16
Continuity mistake: In "Thank You So Much" Valentine's day was on a Saturday or Sunday. In this episode, They are showing Bree marking her chores off a calendar for February and March 2006. The calendar matches the real calendar and Valentine's day was a Tuesday this year. The calendar doesn't match their previous episode. And they do state that "today is Valentine's day." not that they are celebrating it on the weekend.
Continuity mistake: In the 1994 flashback where Bree introduces herself to Mary Alice and forces her son Andrew to apologise when he stole a ornamental garden frog, the position of the frog changes between shots as Bree hands it to Mary Alice.
My Heart Belongs To Daddy - S2-E4
Continuity mistake: When we see Danielle standing with Bree in the kitchen, you can see a long wall behind Danielle without a passageway. But when the shot changes to Andrew and George, Danielle is standing in the background.
Answer: Kayla was sent away in episode 16 (The Gun Song) in season 4, after falsely accusing Lynette of child abuse. She now lives with her grandparents - probably Nora's parents.
I'm curious why we never see her again, why she never talked about, and why Tom never mentions visiting her.