I recently finished reading the Robert Mitchum biography by Lee Server. He gives some background on Jane Greer when discussing Out of the Past. She certainly had a noirish middle life, having a truly weird marriage to Rudy Vallee and later having to contend with the uber-weird Howard Hughes at RKO. I also read somewhere that she did begin her career in show business as a big band singer which would explain the voice (I had always assumed that they dubbed it in). Another nice entry in the series and, as you point out, Bela, more mystery than noir.