The first episode of a new TV series focusing on the Island's prison averaged 3.6 million viewers.
'The Best Little Prison in Britain' aired last Wednesday - going behind the walls to tell the stories of both inmates and officers around the Jurby institution.
ITV figures show the first episode peaked at 3.9 million, with a 23.5 per cent audience share.
The second of the six-part series is on tonight at 8pm.
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