I'm not sure I would market this as a murder mystery, the murder doesn't take place til after the halfway mark, and even then it doesn't really take center stage. However, marketed as an upstairs downstairs great British drama, then it fits the bill perfectly. An all star cast rounds out the nobility and staff, and they are cast beautifully. The storyline is slow, and the bit reveal isn't so grand. But the drama and acting is wonderfull and makes for an enjoyable view.