 The filmmakers had a most practical way of performing the 360 degree  panorama shot of the classroom transforming into Langers torture  chamber with actress Josie Maran  (qv)inside of it. First, the set  was built to resemble a classroom. The camera was then brought in  and bolted firmly to the ground. The shot was filmed and a  protective bag placed over top the camera while the art department  made the room into a dungeon. The camera was then unbagged and the  shot repeated. Blending the two takes together created a perfect  precision transformation. Actress Josie Maran was then superimposed  into the scene.