This episode, "El Secreto," continues to introduce basic words and sen tences of the Spanish language. Asking someone's name, words for broth er, sister, son, and daughter, and other basic family language are use d and explained in conversation. The story of the Castillo family cont inues with Fernando revealing to his children and brother that he was first married to a woman named Rosario in Spain just before the Spanis h Civil War, but left the country after he believed she was killed in a bombing raid. He recently received a letter from a friend in Spain t elling him that Rosario survived the attack and, as a result, becomes obsessed with finding his wife who, when he last saw Rosario, was preg nant with his child. Fernando's brother Pedro enlists the help of a la wyer, Raquel, who departs for Spain to find answers to this dilemma.