Alma cannot sleep. When she goes to bed, soon a series of sounds and shadows involve her. With the help of surveillance cameras and therapy, Alma is going to discover the horrors that surround her, one of which can be her nextdoor neighbour. The house becomes her enemy. Until she decides to do something. Director López Gallego, who also wrote the screenplay, brings us another example of the excellence of Spanish horror and mystery cinema, with great performances by Alba Galocha and Denís Gomez. One of the scariest and most intriguing features of the year.