What goes in to catching a garda killer? In January 2013, Detectives Joe Ryan and Adrian Donohoe from Dundalk garda station were tasked with escorting credit union takings across Cooley Peninsula. The men were ambushed and Det Gda Donohoe was shot dead. What followed was the largest murder investigation in the history of the Irish state. Host: Fionnán Sheahan, Guests: Robin Schiller and Pat Marry

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