Journalist Pavel Barter could have never imagined the tale he would uncover when he started looking into one of the FBI's coldest cases.

But the story of killer Joseph Maloney took him from the US right into the heart of Ireland and its fledgling movie industry to an unlikely love story and into the mind of a cold killer who poisoned his wife then reinvented himself.

Nicola speaks to Pavel about his new book Runaway Joe and the podcast that has proceeded it.

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