Warren Douglas is Johnny Strange of Action Incorporated. In fact, he seems to be all of it. He's calling the newspaper to advertise for a beautiful blonde to be his secretary when Adele Mara cancels the ad -- she fits his description and she can be blonder. Immediately, there's a case: meet a woman, who turns out to be a woman wearing a veil, with a Spanish accent. When the job turns out to be hiding a corpse, Douglas balks. So she knocks him out, calls the cops and heads outside, to remove her wrappings. It's Adele Mara! After she alibis Douglas, he wants to figure out what happened.
It's a movie derived from a radio detective show, but I can't be sure which one. If, as another PI remarked, the cheaper the crook, the gaudier the patter the script must have been dirt cheap. Nonetheless, it's an interestingly tangled mystery with the usual random choice of murderer among the suspects to match its random title. It's fun in an overblown way, but it's no surprise that there were no Oscar nominations for this one.