Back on the Grid but still coming to terms with his past, Lucas is working hard to regain the trust of his colleagues, when the death of an old friend has unforetold consequences. Meanwhile, a trickle of illicit diamonds smuggled from West Africa leads to

Harry's expertise on the ever thorny issue of Northern Ireland is called upon once more, reawakening many a bitter memory. Meanwhile, the Peace Process slowly moves ahead but not everyone is willing to follow; not all the bitter past is willing to stay buried.

With Ruth newly returned from Cyprus and Lucas not long back on the Grid, the old team is only just getting back on its feet. But before long, their nerve is tested when a whole new group of social agitators begins to make their presence felt in increasingly sinister ways. Ruth, Harry, Lucas and Ros must get on the case before things turn deadly.

After years of fussing and faffing, Harry and Ruth's wedding day has finally arrived. One-shot. AU (obviously).