"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 adventure begins when Anne and George witness strange flashing lights coming from the abandoned cottage at night. "The Famous Five" Five on a Secret Trail(1978)

The group meets a young boy, Guy Lawdler, who is involved in a local archaeological dig. They soon discover a gang of criminals is

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. The group meets a young boy, Guy Lawdler,

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

The plot follows the children—Julian, Dick, Anne, George—and their dog Timmy as they go camping near a derelict, ruined cottage on the moorland near Kirrin.