Original Release Date: June 20, 2013Sherlock Holmes battles his archenemy Professor Moriarty in one of his most perilous adventure.Original Air Date: April 10, 1955Support the show monthly at https://patreon.greatdetectives.netSupport the show on a one-time basis at https://support.greatdetectives.netMail a donation to: Adam Graham, PO Box 15913, Boise, Idaho 83715Give us a call at 208-991-4783Take the listener survey at https://survey.greatdetectives.netCheck out our social media at https://www.greatdetectives.net