TV version removes some scenes from the theatrical release and features 13 minutes of additional footage starring Steven Geray, Maria Palmer, William Phipps. Specifically, the scenes added for TV prints are: the scene in which a reporter asks an old doctor why nobody wants to talk about Baron Frankenstein (the later part of this scene is intercut with shots of the deafmute young woman, who IS part of the movie as originally filmed: the two men watch her and talk about her, but do not interact with her); the flashback scene showing the little girl being traumatized by the monster, becoming deaf and mute as a result (only his feet are shown); and the present-day scene in which the girl's father, now a drunken wreck, is told that psychological help may be able to overcome her muteness. These scenes are inserted into the movie smoothly, via dissolves rather than rough cuts, but they add nothing other than length. None of the characters actually gets involved in the story, and nothing about them is resolved: the reporter doesn't get the scoop he's looking for, the father doesn't get his revenge against the Baron, and the deaf woman doesn't get the therapy mentioned.
The murder of the Burgomaster was toned down by the BBFC for the original UK cinema version.