The movie is based on the book "Warrant for X" by Philip MacDonald. So it has a lot of the same characters as in the movie "The List of Adrian Messenger" (1963).
The story has changed a tad form the book. Van Johnson plays a blind playwright (they never say how he got blinded) At first being blind seems like a gimmick but you soon get swept up in the film and the great acting by Van Johnson and it seems perfectly normal.
Phillip Hannon (Van Johnson) over hears two people plotting something sinister but being blind he does not know what they look like. He tells the authorities but they fluff him off. So with the help of his man Bob Matthews (Cecil Parker) and his ex-betrothed Jean Lennox (Vera Miles) they track down their only lead Miss Alice MacDonald (Patricia Laffan who played Devil Girl From Mars"). We watch as Phil has to use his skills to find the plotters before it is too late.
I watch this movie about once a month like clockwork. I know most of the dialog by heart. At one point Phil tells Bob to call Miss Lennox a taxi; I cannot help myself and say "Miss Lennox you are a taxi".
All kidding aside you will also find yourself watching it again and again for the nuances and some things that seem missing as if they cut something out here and there.Warrant For X (An Anthony Gethryn Mystery)