Naked Villainy — Sara Woods

A Black Mass held in the wine cellar of a staid London mansion? It seemed impossible, although Antony Maitland had proof: a scandalous snapshot and a scrap of paper scribbled with mysterious conjurations. Then the man who had complained of the blasphemous doings turned up dead, his own son accused of the unfilial crime. Six solid citizens swore to the young man's guilt. But Maitland had his own suspicions -- and the devilish task of proving the witnesses were witches -- and one of them a killer.