I couldn't find a spot for this in horror/thriller month since I had many more fun films I could spont out, but this is not a thriller. It is just a bad '80s film.
One last thriller, horror or mystery movie to discuss: Clue. Clue is proof that Hollywood has been terrible for a long, long time. In 1985, Hollywood churned out Clue based on the board game of the same name. It was a flop. They went the comedy route. It is a bit of a cult classic, and has multiple 1980s comedic actors like Martin Mull, Christopher Lloyd and Tim Curry in the ensemble. It also has the hot French maid that is burned into the mind of many young men who saw the film when it first came out. The film has multiple endings, and when it came out, different theaters received different endings. This was a terrible idea in 1985, but could be good for now. When shown on television, it shows all three endings with old timey cutouts to playfully tease at what is the true ending. Because it lengthens act three, showing the endings in sequence makes the film better, but they did not do this in 1985. Here's the catch, they are all horribly filled with holes.
The true ending and killer is the one they cut from production. All the murders are done by Tim Curry's character. Watch the film.
1. In the study, pre-lights out, he is standing to the right of the room, but post-lights out, he is behind the group having moved during the darkness. Look at the path he took. He grabbed the gun from Professor Plum, shot at Body, and then brushed by Miss Scarlet, which is why she screams as she was bumped as Curry went by.
2. When the lights come back on, Mrs. Peacock drops her dagger. Important note" the dagger is gone minutes later when she drops her drink, meaning it is gone. In between this time, Curry is unaccounted for. He simply picked up the dagger, ran to the kitchen, stabbed the cook, pulled her into the freezer and then went back thru the freezer to the study entering thru the portrait, only reappearing as the group left the study to find screaming Yvette.
3. They return to the study, but then seek the cook. Note that Yvette and Curry do not get to the kitchen with the others. Curry and Yvette stay behind to kill Mr. Boddy. Yvette drags Mr. Boddy into the bathroom as Curry gets to the kitchen. Sure we do not see Mrs. Peacock or Professor Plum in the kitchen because when they entered, they moved over to the side of the landing just off frame.
4. Curry never throws the key away that is the key to the weapons cabinet. He throws the key to the lounge away, which is why the key to the lounge is gone when Mustard and Scarlet discover the dead motorist and are trapped in the lounge.
5. Once split up in pairs, Curry further splits up from Mrs. White. Curry slips downstairs, burns the evidence, grabs the wrench, takes the secret passage, kills the motorist and goes back upstairs.
6. Curry picks up the gun as he sweeps up the glass fro the broken chandelier. In the grand killing finale. He is upstairs, slips downstairs, turns off the lights. He had already arranged the meet up with Yvette in the billiard room when the lights switched out (it's also impossible for Mrs. White to kill Yvette since Yvette goes downstairs as Mrs. White screams upstairs). Curry kills Yvette, then slips over to kill the cop, and then answers the doorbell to shoot the guitarist for the Go-Gos.
For the same reason as in the ending C "true" ending, he is Mr. Boddy the blackmailer. He now has all the accomplices murdered, plus with the accomplices connections to the blackmail victims, they could technically be blackmailed for those murders.
Curry invited everyone. Curry knew the house. He also had this well timed as all murders happen within a 45 minute span. It was Hollywood deliberately removing the only explainable ending so that thirty years from now stupid websites would blog and vlog about which ending is the right ending.