You wouldn't be seeing this film at any other time other than the midnight to dawn schedule. A relatively effective start leads to a runaround that could very nearly have been farce. Its length denotes its depth: fairly clichéd characters stuck together in a remote country hotel, dying one by one in ways that surely must have been groansome even in 1947.... But at the time of the day I was watching it, my brain wasn't exactly working on all cylinders, so it amused me.
Of particular note is Phillip Terry, whose acting is nothing short of woeful: he is clearly not suited to the type of character he is playing here. The fact that he is playing the main character makes it stand out terribly, and it isn't improved when the tone of the film (and the role) changes as the film goes on.