Clandestine dining in Spain

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The police in Barcelona recently raided a suspicious looking dry cleaners. It was late at night and something fishy was going on. People were going in. But they weren’t coming out. It had all the makings of a front for some illegal business. Turns out it was a front. But the cops didn’t find anything nefarious. Just people eating dinner. The World’s Gerry Hadden explains. Download MP3

• Watch an undercover video of the secret restaurants