Impressed with the film, but would have made changes in script
Robert Montgomery's performance was absolutely fantastic, but some changes would have made this a much better film, IMHO. ***SPOILERS AHEAD***
1. They should have made it ambiguous that Danny was the killer, not letting on so soon in the film, like Cary Grant's role in "Suspicion".
2. What in the world is Roz's objection to her handsome lawyer boyfriend?? He seemed like a dream catch, to me! He should have been played by a much more homely guy. I kept thinking "Hey, stupid, I'll take him!!!".
It also didn't make any sense to me that they thought it strange at all that Roz was frightened & left her aunt's home - right after the headless, naked body of a murdered woman is found a short distance from the house??
3. I would have had Danny lie to Roz & her aunt about knowing the murdered woman. I would also have Roz accidentally find the photo of the murdered woman (perhaps in Danny's coat pocket?) after she saw her photo in the newspaper nearer the end of the film, and realize Danny had lied about knowing her.
4. It was WAY too much out of character for Roz to cover for Danny (convinced he'd committed the murder, no less!) in the hatbox scene. I would have had Danny tell the detective that the hatbox was in his room before he moved in, and somehow use his charm to coax the old lady to back his story up. Or the hatbox could simply disappear and Roz discover that in the search scene described below.
5. It was just too, too odd to me that Danny did not get furious at the 3 women going through his things. And I would think Dora would have some objections, as well, since she was planning to marry him! I would have had just Roz and the cook do the snooping. And snooping just because Roz wants to find out what sort of man Danny is & his past, not because she suspects he's a murderer.
6. I would also have Danny whistle "Mighty like a Rose" right before she leaves the Aunt's house, which would better explain why she was so freaked out.