One of the best things about living in Ireland is how eager people are, often complete strangers, to tell stories. I was lucky enough to be picked to work on a film set at Ardgillan Castle in North County Dublin earlier this summer and, in the quieter moments between shooting, we discussed the history of this beautiful demesne, now restored and run by Fingal County Council. The castellated house with walled garden and parkland has sweeping views of the ocean and is open to the public. As with most castles and grand old houses in Ireland, the stories inevitably involve a ghost.