sneak peek
nounUK /ˈsniːk piːk/
US /ˈsniːk piːk/
A quick look at something before other people see it.
We got a sneak peek of the new movie before it came out.
OTHER MEANINGS
2. A short clip that shows parts of a movie or show before it is released.
The studio shared a sneak peek of the cartoon's first episode.
3. A chance to see something private or secret for a moment.
She took a sneak peek at her birthday present hidden in the closet.
4. An early view of a product before it goes on sale.
The store gave customers a sneak peek of the new toys.