NIGHT AT THE MUSEUM 3

When Larry discovers that there’s something wrong with the ancient tablet that brings the characters of his museum to life, he travels to the British Museum in search of a way to save his friends.

She’ll play a British night guard.

Comedian will reprise his role.

Will play Ben Stiller’s son in comedy.

“Downton Abbey” star joins sequel.

Logline: Kept under wraps.