Complex sentence: Whilst Carolyn and David watch television, Elizabeth is shocked to find Barnabas and talks to him about it, he asks her about the legend of Barnabas Collins and the family curse, which Elizabeth believes are myths.
Split into simpler sentences: Whilst Carolyn and David watch television, Elizabeth is shocked to find Barnabas. He asks her about the legend of Barnabas Collins and the family curse, which Elizabeth believes are myths.