"The Lady In Scarlet" is a good murder mystery with a good plot and a good star turn by Reginald Denny as the detective/ hero. As expected, it is a bit dated but engrossing nonetheless. It was written better than interpreted by the actors and it suffers from several lapses into amateur acting. Apparently the budget was so tight that second takes were in short supply, and it needed a few.
Enjoyed the interplay between Denny and his secretary, Patricia Farr. As several contributors have noted, it bears a strong resemblance to that of Nick and Nora Charles, only not as witty. Special mention should be made of Jack Adair, who plays a crooked art dealer. I have awarded him the Hand-Painted Mustache Cup for the Worst Performance By A Supporting Actor In A Poverty Row Movie. It has to be seen to be believed - breathtakingly bad by any measure, and ruins every scene he is in.
Good story, and in only 65 minutes. It will keep you guessing right up to the end. It makes you think a bigger studio could have done wonders with material such as this. And hired some better actors.