The Occupant

Hogar is a movie starring Javier Gutiérrez, Mario Casas, and Bruna Cusí. Javier Muñoz, once a successful executive, makes the fateful decision to leave his home, which he and his family can no longer afford.
An unemployed executive is forced to sell his apartment. When he discovers that he still has the keys, he becomes obsessed with the family that now lives there and decides to recover the life he has lost, at any price.