High Quality Content by WIKIPEDIA articles! Walled In is a 2009 horror-thriller starring Mischa Barton. THe film is based on the best-selling French novel Les Emmurés by Serge Brussolo. IT is the English-language debut of critically-acclaimed French director Gilles Paquet-Brenner. THe film was shot in Saskatchewan, Canada.BAsed on Serge Brussolo's bestselling French novel "Les Emmures," about a demolition company rep (Mischa Barton) who supervises the razing of a mysterious building and discovers horrifying secrets and past inhabitants entombed within its walls by a vicious murderer.