An indiscreet duke asks Holmes to find out who is blackmailing him. Original Air Date: March 22, 1950 Support our listener support campaign....http://support.greatdetectives.net Take our listener survey: http://survey.greatdetectives.net Become one of our friends on Facebook... http://www.facebook.com/radiodetectives Click here to download, click here to add this podcast to your Itunes, click here to subscribe.