The epic saga continues as Luke Skywalker, in hopes of defeating the evil Galactic Empire, learns the ways of the Jedi from aging master Yoda. But Darth Vader is more determined than ever to capture Luke. Meanwhile, rebel leader Princess Leia, cocky Han Solo, Chewbacca, and droids C-3PO and R2-D2 are thrown into various stages of capture, betrayal and despair.
A plumber, John Horner, is arrested just before Christmas and charged with stealing a famous jewel, the Blue Carbuncle, from Lady Morcar. He denies the theft - but he has a criminal record, and all the evidence is against him. After Holmes's doorman finds the Carbuncle in a Christmas goose, Holmes uses an old hat to track the goose to a poultry dealer, then traps the servant who stole the jewel and framed the plumber. The Blue Carbuncle has a dark history, and the stone features in the programme's opening credits with turbulent scenes from its past.