Finally finished with tonight's painstaking work - figuring out and notating every change between the play and film versions of Dial 'M' for Murder. Certain cuts they made are very helpful and I'll be doing some of those, too - and certain small additions of dialogue to hit home plot points are also very helpful in the film, so I'll probably add one or two of those. Now that it's all notated I can pick and choose between them - it's all by Frederick Knott so I'm fine doing it.