Sergio Calderón

Americans Amy, Stacy, Jeff and Eric look for fun during a sunny holiday in Mexico, but they get much more than that after visiting an archaeological dig in the jungle.

After a police chase with an otherworldly being, a New York City cop is recruited as an agent in a top-secret organization established to monitor and police alien activity on Earth: the ...

When school teacher Harriet Winslow goes to Mexico to teach, she is kidnapped by Gen. Tomas Arroyo and his revolutionaries. An aging American, Ambrose “Old Gringo” Bierce ...

A group of students arrives in a small town during a hiking expedition. Once there, the local priest accuses them of being communist agitators on the run from an army crack-down against ...