This was excellent in all departments. If I could hazard a guess what the keystone for it all was, it would be the script. It provided a continuous thread, not just of exposition but of revelation and surprise allowing the characters to think, react and act according to their growing understanding. The dialogue was not simply recitation but very purposive causing the viewer to be a non-speaking participant rather than mere observer. The elderly lady who has been cheated out of a great deal of money at first has immovably closed ears to anything against a closest friends' son but changes to become very brave and determined to trap him. The brief cutaways of surprised expression exactly match the viewer's reaction. Having meaningful lines allowed the cast to deliver them really meaningfully. Court-room dramas are almost a cliché but this production brought quite novel aspects - movements in and out of the courtroom - the subtle tipping off of witnesses in passing and the sudden end where witnesses,friends and family step into the sunlight - some irrevocably separated, some once divided, brought together. And the end where Barnaby's subtle exchange with the expert witness is itself witnessed by his daughter, who like the viewer, infers an unsuspected revelation. There are many feature films not in this class