A girl reporter is trying to tack down the lady-in-the-title, as a key witness in a graft trial, which involves three murder and that many failed attempts. A prosecuting attorney in the district attorneys office is aiding her in solving the mystery of the missing lady.
| Actor | Role |
|---|---|
 Mary HowardDiane Rossiter | Diane Rossiter |
 Sheila RyanLee Dale | Lee Dale |
 Ricardo CortezAnthony Pearce | Anthony Pearce |
 Robert LoweryRobert Scott | Robert Scott |
 Rose HobartAlma Pearce | Alma Pearce |
 Janis CarterVesta Hadden | Vesta Hadden |
 Joan ValeriePhyllis Guerney | Phyllis Guerney |
 Paul GuilfoyleCarl Spence | Carl Spence |
 Joseph AllenTom Mason | Tom Mason |
 Paul FlahertyNash | Nash |
 Charles TrowbridgeJudge Rossiter | Judge Rossiter |
 Frank PugliaBaggott | Baggott |
 Eddie AcuffArthur Guerney (uncredited) | Arthur Guerney (uncredited) |
 Edwin StanleyStafford | Stafford |
 Edward KeaneJudge | Judge |
 Cliff ClarkLieutenant Palmer | Lieutenant Palmer |
 Jeff CoreyMedical Examiner | Medical Examiner |
 Byron FoulgerGeorge | George |