Happy Mother’s Day! We’re celebrating moms with five old time radio mysteries where they play major roles. In “The Case of the Lucky Shilling,” Sherlock Holmes comes to the aid of a woman whose son is wiped out by a crooked gambler (originally aired on Mutual on January 14, 1948), and George Valentine tries to prove that a woman is not an unfit mother in “Problem Child” from Let George Do It (originally aired on Mutual on June 21, 1948). A woman hires Dan Holiday to prove her son’s death wasn’t an accident in “Suicide or Murder” from Box 13, and the mother of an escaped convict wants Richard Diamond to send her son back to prison (originally aired on NBC on October 4, 1950). Finally, the cops of Dragnet are on the trail of a serial shoplifter who only steals clothes for children in “The Big Little Mother” (originally aired on NBC on October 6, 1953).