Sherlock Holmes - Season 1 - Episode 34 - The Case of the Royal Murder

As payment for solving a case, Holmes and Watson are invited to spend a weekend at an estate in the Balkans. However, their vacation is cut short when another guest, Prince Stefan, is poisoned and their host is accused of the murder. Holmes must find the real killer before he himself becomes the next victim.

Directors: Steve Previn, Sheldon Reynolds, Jack Gage
Writers: Harold Jack Bloom, Arthur Conan Doyle, Charles Early
Starring: Ronald Howard, Howard Marion-Crawford, Archie Duncan, Richard Larke