Former zoo worker Bradley Tomes hatches a plan to steal and sell Humboldt penguins Patrick and Penny from South Lakes Safari Zoo in Cumbria.

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Presenter: Rima Ahmed. Produced by Luke de Costa. Researcher: Bethan Davies. Social Media: Fede Marilotti. Online Producer: Rachael Smith. Executive Producer: Luke Eldridge. Commissioning Editors: Gareth Hydes and Alistair Miskin.