Complex sentence: This is to the great displeasure of his father, the noted oceanographer Dr. Otto Lindsay (Jon Hall), who is married to the younger Vicky (Sue Casey), who is dissatisfied with Otto's relative lack of devotion to her.
Split into simpler sentences: This is to the great displeasure of his father, the noted oceanographer Dr. Otto Lindsay (Jon Hall), who is married to the younger Vicky (Sue Casey). Vicki is dissatisfied with Otto's relative lack of devotion to her.