Sherlock Holmes returns to the Cornish country and investigates a frightening story of a rocking cradle that's frightening a pregnant woman and endangering her life. Original Air Date: November 30, 1947 Take our listener survey...http://survey.greatdetectives.net Become one of our friends on Facebook...http://facebook.com/radiodetectives Follow us on http://www.twitter.com/radiodetectives Vote for the show…