Fixed in example sentence
The problem with books like those of Agatha Christie, Dorothy L. Sayers or S.S. Van Dine (on whose work this film is based), is that they are low on action or variety - whereas Sam Spade or Philip Marlowe traverse the mean streets of LA, working class tenements, bars, offices, wealthy mansions, and meet all sorts of exciting dangers and violence, Golden Age fiction is generally fixed in location, the scene of the murder, usually a lavish country house, and the action is limited to investigating clues and interviewing suspects.