 all references to to the names Burke & Hare were removed from dialogue   scenes. This includes the scene just before Karloff kills Lugosi in which he   explains how he "Burked them" and sings a little song and also trims to a   dialogue scene near the end in which Henry Daniels mistress explains to the   young hero Daniels sordid past. At least three other small cuts in scenes   when characters refer to the names Burke and Hare. 