Emily Mortimer and Michael Stuhlbarg have joined the cast of "Hugo Cabret," the movie Martin Scorsese is now shooting in London, GK Films said Wednesday.

Mortimer co-starred in "Match Point" and Stuhlbarg headlined "A Serious Man."

Their latest project is a live-action 3D film based on Brian Selznick's best-seller "The Invention of Hugo Cabret."

The adaptation also stars Ben Kingsley, Sacha Baron Cohen, Asa Butterfied, Jude Law, Ray Winstone, Christopher Lee and Chloe Moretz.

Written by John Logan, the movie is being produced by Scorsese, Graham King, Tim Headington and Johnny Depp.

"Hugo Cabret," Scorsese's first film shot in 3D, is the tale of an orphan boy living a secret life in the walls of a Paris train station, GK Films and Sony Pictures Entertainment said.