"The Sign of Four" is my favorite Holmes story, and the Jeremy Brett rendition the best I've seen. This silent version is slow moving an meandering, but at least it has some of the elements, particularly the plot made by the prisoners. That said, we have pointless use of film, with little editing. At one point, three minutes are used up as people get out of vehicles and into a building. The chase scenes could have been trimmed as well as Holmes mugging for the camera. But it turns into a decent adventure story and I'm sure was exciting for the viewers of the time. I wasn't familiar with the guy playing Holmes but he does overdo the silent stuff a bit.