Continuity mistake: When Susan and Mike are lying on the floor in the kitchen, Susan says to Mike "You can pay the loan off by yourself" and Mike has his left hand on Susan's wrist, but in the next shot, he no longer does.
Every Day a Little Death - S1-E12
Continuity mistake: When Edie throws the container of Mrs Huber's ashes over Susan after she discovered Susan burned her house down, there is still some ash in Susan's hair and on her cardigan from a previous take.
Continuity mistake: When Mike comes home soon and finds Susan in sexy lingerie in the living room, the laptop reads 0:00:36. Mike grabs Susan in his arms while she desperately tries to shut off the laptop, but only seven seconds later the screen reads 0:06:33. Then the camera switches again and the laptop reads 0:02:47 when Susan finally shuts the screen. (00:14:45)
Secrets That I Never Want to Know - S8-E1
Continuity mistake: When Gaby looks for her stepfather's car with Bree, Chuck takes over and drives it for them. But in past episodes the stepfather's Ford Focus was a two door model not a four door.
Continuity mistake: When Zach is in Julie's bedroom, he says to her, "And they buried her, to protect me" and you can see that Zach has his hand on his cheek. When the camera angle changes to behind Zach in the next shot, he no longer does.
Continuity mistake: Before the fight between Helen and Susan at the fashion show, Susan has a flower in her hair. There is no sign of the flower when Helen tears off part of her wedding dress, but when Susan says "What?", the flower is back again.
Continuity mistake: When Gabrielle asks Angie if she would like to meet Heidi Klum at the modelling agency, the magazine Gabrielle is reading is open, but when she says "Sure, she's an old friend", the magazine is closed.
Continuity mistake: Lynette is giving a speech during Renee's wedding. In some shots, she holds the microphone in her right hand and a glass of wine in her left hand. In other shots, she holds the microphone in her left hand and a glass of wine in her right hand. (00:32:40)
There Is No Other Way - S2-E16
Continuity mistake: When Susan reveals her feelings in the operating room, the face mask Dr Ron is wearing covers his nose and mouth in one shot, then not his nose in the next, then his nose and mouth again in the next. (00:38:30)
Color and Light (a.k.a. I Must Be Dreaming) - S2-E7
Continuity mistake: When Gaby goes outside to ask for help with her dress, you can see that the door is open when she leaves, but a couple of shots later the door is closed, despite Gaby not being near it.
Bargaining - S5-E21
Continuity mistake: During the breakfast scene with Mike, Katherine and MJ at the start of the episode, the spoon in MJ's bowl of oatmeal changes position between shots.
Continuity mistake: When Lynette gets up from the PTA meeting to go to the washroom, she has a purse on her shoulder. After her confrontation with Anne Schilling, Lynette storms out of the washroom but she is no longer carrying her purse.
Every Day a Little Death - S1-E12
Continuity mistake: When Edie is about to spray water on Susan from the hose, you can see that Susan is very close to Edie, but as the camera angle changes she is much further away.
My Heart Belongs To Daddy - S2-E4
Continuity mistake: When Mrs. Mulberry's umbrella is run over by the garbage truck, the position of the umbrella changes between shots.
My Heart Belongs To Daddy - S2-E4
Continuity mistake: When Susan is telling Bree and Gabrielle about Zach, Gabrielle's wine glass has a small amount of wine at the bottom, but in the next shot is almost half full.
Continuity mistake: At the start of the episode, Zach picks up some gravel from beneath the lamppost and throws it at Julie's window. But when he leaves Susan the flowers, you can see that the gravel has disappeared.
Continuity mistake: When Bree is preparing a care package to ship to Andrew's camp, she sneaks some lemon bars into the package, and quickly closes the two side flaps of the cardboard box, leaving the end flaps out. In the next shot, she is immediately taping the box with all flaps down.
Continuity mistake: Parker is tearing the flowers apart until there are none. In the next shot, there are some flowers left, and when he jumps off the chair, the flowers have gone again.
Love Is in the Air (a.k.a. What I Did for Love) - S1-E14
Continuity mistake: When Gabrielle is putting the lipstick on Yao Lin in the department store, the lipstick changes between shots.
Love Is in the Air (a.k.a. What I Did for Love) - S1-E14
Continuity mistake: When Gabrielle is speaking to Mickey on the phone, she puts her earrings in a bowl but later on in the scene they are back on her ears.
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.