Diaz, far better-known, has 159 credits and much more charisma on screen. Winston is not bad, however, at self-parody of a wisecracking fake "writer". Winston promptly falls for Diaz's sister by adoption, Katherine Henryk (14 credits).
Winston passes up 2 b-girls who lose their lives, but he cannot help with a secondary attraction to a blond dancer (Yvonne Nielson, 3 credits) who maintains her youth with the help of the nightclub owner, who somehow goes in and out of being a monster and killer for her.
The cinematography is strictly and all the way noir, with a good many night scenes. Low-budget, some exteriors reflect Manila, but really not many. This epic runs 71 minutes, and one should not look for mystery-solving logic. Look instead for the comforting and easy-to-take engagement of the second feature. Its low 4.4 rating accurately reflects the low quality of the script. This didn't faze me a bit. I will watch "The Frozen Dead" too. For a more sophisticated movie in which the blonde gets her youth from a serum but also becomes homicidal, see "Satanik" (1968). This too is not really a horror movie.
For more of Diaz in a noir vein, see "The Scavengers" (1959), with Vince Edwards. Carole Ohmart's present too, and my recollection is that again there's lot of noir atmosphere. See for yourself.
"Sin You Sinners" (1963) is one I have not watched. "A stripper/fortune teller uses a magical Haitian amulet to keep young, and in so doing forces others to kill for her."