This period melodrama is one of Griffith's earliest claustrophobic films. Characters trapped within a room are prevalent throughout his work and, as time went by, he would become increasingly adept at portraying their helplessness and involving the audience in their terror. In the bluntly titled Sealed Room there is one major difference to the normal plot line, in that there truly is no escape.<br /><br />Griffith achieves the claustrophobic effect here in two ways. First is his use of space. While the typical Biograph short might utilise a dozen or more sets, The Sealed Room features only two adjoining rooms  the king's court and the dove cote that becomes the eponymous tomb. The set design in these shorts is rarely referenced, but here it is crucial. The court is a large interior, with a backdrop hinting at greater depth and showing us a window and a staircase. Actors enter and leave from various directions, suggesting the room is not only spacious but also free and open. By contrast the dove cote's back wall is very close to the camera, and the angles in it suggesting a hexagonal or octagonal shape make it seem even more confined.<br /><br />The second technique on display here is the cross-cutting. Anyone with an interest in Griffith's work will probably know about his heavy use and development of cross-cutting to build excitement or tension. Many will also know that strictly speaking it wasn't his invention. However what makes Griffith's cross-cuts so effective is the way he paces the opposing images so they complement each other. The Sealed Room contains a good example of what I mean. The shots of the masons shifting the heavy bricks have a slow, step-by-step pace to them, with tension building as the wall gets higher. This movement is matched by the shots of the blissfully unaware lovers, in which Marion Leonard tears off flower petals one-by-one. As the couple realise their predicament, their rising panic is complemented by the opposing shot of the king madly thrashing his sword against the wall.<br /><br />At this point, Griffith was yet to realise that the action could be heightened further by introducing a third strand to the cross-cut. The dramatic "ride-to-the-rescue", here absent, was later to become a standard climax to Griffith's pictures.