The Gateway of the Moon (1928)

"A Tropical tempest of Emotion on the Amazon."

To prevent discovery of the cruel methods he is using in building a Bolivian railway, Gillespie a ruthless construction crew foreman, attempts to kill Arthur Wyatt, an Englishman sent to inspect the job. Gillespie's niece, Toni, discovers the plot and saves Wyatt after he has been shot by her uncle's accomplice. A lost film.