Sherlock Holmes, with his power of observation and impeccable deduction, solves one more case and helps Alice Faulkner and his aged mother to get out of a complicated situation. Alice has been held captive by the Larrabees who are trying to blackmail a wealthy family of foreign nobility. And of course, Professor Moriarty gets involved and tries to destroy Holmes but, as always, he gets outwitted by Holmes. All ages welcome.