3x28 - The Adventures of Robin Hood

Sir Boland, in desperate need of money, promises the hand of his niece and ward, Lady Melissa, to Sir Louis de Panay, an elderly Norman, in spite of her being in love with Sir Boland's squire, Alwyn. Maid Marian and Friar Tuck determine to stop him. From Tuck, Robin deduces that Sir Louis wants to regain his lost youth, and Robin conjures a phoney story and 'Elixir of Youth' to sell to him.