The facts in the case are 'muddy'.
The recording sounded 'muddy'.
His shoes were 'muddy'.
(..) You are familiar with Schubert's work? A Trout is uh... Perhaps my favorite. A fisherman grows weary of trying to catch an elusive fish. Out the way... Out the way... So he muddies the water. I'm Warnin ya.... Confusses the fish... You were warned. He doesn't realize until too late (..)2011 Sherlock Holmes: A Game of Shadows