Jack Driscoll (Owen McDonnell), a Sergeant with the Irish police, is completely at home in his new patch; he ought to be as he was born and brought up there.  He knows the people, he knows the West of Ireland and, more importantly, he knows how the two fit together.  But this is no cushy posting; Jack’s ‘patch’ stretches from the Atlantic coast in the West to the glacial lakes in the East, from Galway City in the South to Killary harbour in the North - he’s on call 24-hours a day and, more often than not, he’s single-handed.