Luz de amor (1993)

Daniel and Luz, a married couple travels to their beach house for a weekend together. Daniel gets an unexpected phone call and must leave. Meanwhile, an older looking postman delivers a letter to Luz. She puts it away. The phone rings and she runs to answer it, but falls down the stairs and dies. Daniel feels terrible for leaving her alone to spend time cheating with his secretary. Daniel returns to the beach house and finds the strange letter...