Details on the Blu-ray transfer, deleted scenes, and the widescreen:

From henstoothvideo, details on the blu-ray restoration and deleted scenes:

The Blu-ray edition of THE PRIVATE EYES was transferred from an archived 35mm Interpositive (IP) at 1080p high definition. The entire film was re-timed, shot by shot and color corrected on a state-of-the-art Spirit 4 Data Cine film scanner at Prime Focus (formerly Post Logic Studios) in New York. It underwent a rigorous digital "clean-up" to remove hundreds of dust and speckling imperfections. Some scenes in the original film were dimly lit intentionally by the filmmakers to make it look like the dark secret passageways one would expect in an old dark house mystery. The Blu-ray transfer was correctly timed to maintain the artistic integrity of cinematographer Jacques Haitkin's vision for the film. The technology employed in this new transfer delivers a huge improvement in the visual clarity and definition over the previous VHS and DVD versions.

Regarding the deleted scenes; a lot of time and money was spent trying to locate the deleted scenes but they could not be found. We found a 16mm negative that was marked "Network Version", then transferred it to video and found no additional scenes. It was exactly the same as the theatrical version. We regret that the deleted scenes may never be seen again but they were not stored with the original materials in the New World Pictures library nor did NBC-Universal have a taped copy of the picture.

and comments from Wookalars side-by-side comparison with the full frame DVD:

For some more good news: This is really widescreen. Other people on these boards, I'm sure, know more about this, but just to let you know what I've seen--I compared the full-screen DVD to the Blu-Ray. I thought they were just going to chop off the top and bottom of that to make it 1.78:1. However, that's not it. There is new information on the left and right sides! This was definitely shot in widescreen, then cropped to TV dimensions. The framing always looked so fine to me in full-screen, I just assumed it was like that originally. Again, I don't know the official stats, but this is what I saw comparing them side-by-side.