Jonathan Poritsky’s review published on Letterboxd :
I’m easily spooked by atmospheric horror, so this is right up my alley. One thing I love is characters who are willing to engage with the supernatural. (I would not have the stomach for it.) This is not a horror movie about being scared away, but about solving the mysteries of life and death. It is also a bit silly; the closing line cuts straight to Milland’s cycnicsm that I find so attractive throughout.
I can’t speak to whether the ghostly effects were cutting edge for this era, but they feel smoother, cleaner than similar effects I’m aware of. I wonder if this Film served as an inspiration for Personal Shopper.