“This amazing short film was directed by Antonio Mercero for Spanish television in 1972. It’s a wonderful example of efficient, lean horror story telling which squeezes in plenty of thrills and shocks in its 40 minute running time.
Essentially a European riff on a Twilight Zone style format, the film begins with a team of workmen installing a new public phone box. Later a man drops his boy off at the nearby bus stop and then pauses to make a call…
But the phone doesn’t work and when he tries to exit he finds himself trapped. The filmmaker makes a lot out of the claustrophobic setting in these opening scenes, the box is glass on all four sides leaving our victim exposed and embarrassed as a crowd gathers to witness the odd spectacle. Small children taunt him, offering him peanuts and calling him a monkey. Several people offer to help including the police, the local strongman and a handyman with a bag of tools…
The film is a triumph, telling a simple story with an excellent central performance from the lead that has to deliver a huge range of emotions through body language without turning the whole film into an embarrassing pantomime. The filmic photography sets this apart from the usual TV movie fare and the varied score, which ranges from playful for the comedic opening to apocalyptic during the twisted finale, all help to create a thrill ride with a shocking ending that will stay with you for a good while afterwards.” – DVD Resurections