Marcos Efron’s And Soon the Darkness (2010) is a tense thriller about two American women whose bike trip through rural Argentina turns into a nightmare when one of them disappears. Starring Amber Heard and Karl Urban, it’s a modern remake of the 1970 British suspense classic — a blend of isolation, abduction, and mounting paranoia.

Från IMDB:
A couple of American girls on a bike trip in a remote part of Argentina split, and one goes missing, the other must find her before her worst fears are realized.