**_There’s more to life than rashly killing people with a spear_** In 1956, several American missionaries deep in the Amazon basin try to contact the warring Waodani tribe, who live near the Curaray River in eastern Ecuador. Thirty-eight years later, the son of one of the missionaries goes back to the area to reacquaint with the people he met as a child. “End of the Spear” (2005) is a drama with some thrills based on the true story. Movies with a similar milieu include “Fitzcarraldo,” “The Emerald Forest,” “At Play in the Fields of the Lord,” “Medicine Man” and “The Lost City of Z,” even...