In The Mystery of the Haunted Lighthouse, Sarah-Jane Cooper and her detective cousins are invited to explore an old lighthouse Mr. Cooper's friend is planning to buy. Sarah-Jane is excited about her first chance to see a real lighthouse, but she can't help thinking it looks a little spooky. Is it just her imagination, or is someone trying to scare them away? It's up to the TCDC to unmask the lighthouse's secret!
Theme: Faithfulness