Perversión (1974)

Marisa Salinas gets her first job at one of the top publishing companies of her country. Don Ricardo Arencibia, her boss, is a man who does not appreciate innovation and new proposals from the staff, but enjoys bloody crime stories, and beautiful women. Don Ricardo invites Marisa out for dinner; they start behind friends and, soon, they start a sexual relationship. All goes well - safe for a little mystery that envelops Ricardo's ex-wife. Marisa decides to investigate... and she will uncover much more than she expected: Ricardo had been trying to make Marisa look like his former wife, and there is a plot involving large scale corruption.