La cabina

• Written by Mercero with Jose Luis Garci and broadcast on Television Espanola on December 13, 1972, the 35-minute film won the 1973 International Emmy Award for Fiction — still the only Spanish program ever to take one — plus the Golden Nymph at the Monte-Carlo Television Festival.
• TVE executives feared the trapped-man parable read as a swipe at the Franco regime and suspended its broadcast date; mounting praise from the Spanish press over Mercero's Monte-Carlo win and the prospect of lucrative foreign sales finally tipped the balance toward airing it — reportedly with one brief shot trimmed over a claim it showed ministry property.
• Star Jose Luis Lopez Vazquez, Spain's on-screen everyman and a famously physical comic actor, had just proven his dramatic range the year before in Mi querida senorita (1971) — exactly the kind of expressive, nearly wordless performance a film that strips dialogue down to a few desperate, useless pleas demanded.
• Core entrapment scenes were shot in Madrid's Plaza del Conde del Valle de Suchil in the Chamberi district; the climactic underground sequence was filmed in the galleries of the Aldeadavila dam, with additional exteriors near villages in Salamanca province such as Vitigudino and La Zarza de Pumareda.
• The ending hauls the booth into an underground warehouse stacked with other booths, each holding the decaying remains of a similar trapped man — one having strangled himself with the phone cord — while the company calmly installs a fresh booth back in the same city plaza.
• Aired to a reported 20 million Spaniards, the film unsettled the country so badly that it spawned lasting legend — tales of panicked phone calls and viewers wary of public booths — and TVE held off re-broadcasting it for years.

Read as a Franco-era abduction parable: the man is plucked off a public square in broad daylight while bystanders look away, then carted off and disappeared — the exact fate of dissidents under the regime, dressed up as a faulty utility installation so the censors couldn't pin anything on it.

The booth as the bureaucratic machine itself. No villain ever appears — just technicians following procedure, a phone company doing maintenance, paperwork-grade indifference. The horror is that the system needs no malice to grind a man to death; it only needs everyone to keep doing their jobs.

The cyclical close — a fresh booth installed the moment the last victim is filed away underground — reframes the whole thing as an appetite, not an accident. The plaza is bait, the crowd's laughter is part of the trap, and the cheerful new booth means the next man is already chosen.

Workmen bolt a fresh phone booth into a sunny Madrid plaza, and an ordinary man steps in to make a call. The door seals behind him. The phone is dead, the latch won't give, and the crowd that gathers treats his panic as street theater — laughing, shrugging, drifting off. When company technicians finally arrive, they don't free him. They load the booth, man still inside, onto a truck and drive it out of the city toward something far worse waiting underground. Mercero builds suffocating dread from the dullest object on the corner.