The Caller (2008)

Director: Richard Ledes
Cast: Elliott Gould, Frank Langella, Laura Harring

Synopsis:

Jimmy Stevens, a senior VP at an international energy firm, blows the whistle on his company’s deadly and corrupt practices in Latin America. Knowing he will be assassinated for his betrayal, he places an anonymous call securing the services of private detective Frank Turlotte to trail him from a distance.