A whole two minutes and 17 seconds of the new wizard movie was shown on US TV on Thursday night.
It's Harry's second year at Hogwarts and this latest sneak preview gave a good idea of what to expect from one of the most waited-for films of the year.
Voices in the walls
This new one was broadcast on the TV station WB, the sister network of Potter film studio Warner Bros.
The film's released worldwide in November.
In Secrets, term starts well but Harry soon begins to hear voices from within the walls and Hogwarts students are mysteriously turned to stone...
You can watch the trailer by clicking on the web link on the right