![Avatar: The Last Airbender mistake picture](/images/screenshots/198000-198999/198220_sm.jpg)
Continuity mistake: When Katara is trying to heal the wounded earthbender, she gives Sokka the idea to take down The Drill from the inside. Sokka then stops her from saying anything while she is sitting down, and she is wearing her necklace. When she stands up in that same shot, the necklace is gone, like they forgot to animate it. (00:07:35)
Chosen answer: Toph had Katara use it to send a letter to her parents. It never returned.