Ireland's 'Celtic Tiger' economy has imploded, but something stirs in the rubble, striking a chord with the public: Patrick Larkin, a homeless man, alcoholic and mentally ill, is beaten to death in a park. Larkin was a well-known fixture. His solitary walks along the coast road in a posh suburb near Dublin had earned him the nickname 'The King of Ireland.' Months pass and the case goes cold, but indignation rises: has the case been 'kicked into the long grass?' Inspector Minogue leaps at the opportunity of a posting in 'cold cases.'