"the Famous Five" Five On A Secret Trail(1978) -

The Five eventually uncover the truth behind the "ghostly" lights and foil the gang's plot. Production & Reception

The series starred Michele Gallagher as George, Marcus Harris as Julian, Gary Russell as Dick, Jennifer Thanisch as Anne, and Toddy the dog as Timmy. "The Famous Five" Five on a Secret Trail(1978)

They soon discover a gang of criminals is using the cottage to search for a hidden secret tunnel. This tunnel reportedly contains a "precious blueprint" that the criminals are desperate to recover. The Five eventually uncover the truth behind the

The group meets a young boy, Guy Lawdler, who is involved in a local archaeological dig. Marcus Harris as Julian

Some viewers criticized the 1978 adaptation for its use of "dark filters" during nighttime scenes, which can make the footage difficult to see even in remastered versions.