Available On Blu-Ray In Set
It, along with seven other movies, is available on blu-ray in a collection called Thrillers from the Vault.
https://www.millcreekent.com/products/thrillers-from-the-vault
The movie is great and looks great up until the last 10 minutes or so when the picture quality takes a bit of a tumble which is unfortunate but what can you do.