Cadfael: The Leper of Saint Giles

The Set-up: A young lady is accompanied to the Abbey by her aunt and uncle, also of the gentry, to await her imminent marriage to a baron many years her senior. The baron is a cruel and ill-liked man, while the maiden, an orphan, is beautiful and liked by all. The three squires for the baron, including his nephew, all believe the maiden to be most fair and pity her for being forced to marry the baron.
Before he is married, the baron has one last task that he must do, and he must do it alone. He is last seen by his squires as he rides off into the afternoon.

The Rest: The baron is found dead, and the wedding seems off. But the girl's aunt and uncle are greedy and make a deal with the baron's nephew who has now become baron to marry the girl. Cadfael (Derek Jacobi) discovers that the baron's meeting was a rendezvous with his long-time mistress; furthermore that the only one who know he was going to this meeting would be the only one that could seek him out and kill him and that this must be the nephew who had most to gain from the baron's death.
The girl's horrible uncle is slain, but his murderer never brought to justice for Cadfael convinces Hugh that it had been a duel. He tells as much to the leper who killed him and is revealed to be the girl's grandfather home from the crusades all of these years later. He came back to check on her and seeing how her uncle treated her, slew the man.

Commentary: Rule number one when watching this type of show is to pay attention to any type of incongruous dialogue at the beginning of an episode, for it certainly pertains to the twist that comes at the end. "Gosh, why is talking about some commander of his in the crusades? He doesn't usually like to talk about the crusades." Hmm, I wonder who will pop up later in the episode?

Proof: straw, clover, the baron's hat which has a particular flower in it and Cadfael's hunch