Set in the USA, the plot concerns Thomas Norton, a researcher in the field of lie detection, who provides his services to courts and private industry. One day he idly attaches electrodes to a plant in his office, and is surprised to find it responds with recognisable emotional reactions to the stimuli he gives it. He pursues this research, and keeps a plant wired up in his lab. When a woman who lives in his building is mysteriously murdered in his lab, the plant is the only witness to the crime.

Cast

Sergio Fantoni

Thomas Norton

Paola Pitagora

Margaret Stakowski

Marco Bonetti

Mark Bennett

Sergio Rossi

The Lieutenant

Luigi Casellato

Nick

Paola Montenero

Betty Segal

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About this title

The Green Trail

1975 · 1 season · Ended

Mystery Sci-Fi & Fantasy