Back in the early 1980s my household was one of the few on the estate to have a telephone. You knew by the lack of overhead cables. This was in Northern Ireland

Back in the early 1980s my household was one of the few on the estate to have a telephone. You knew by the lack of overhead cables. This was in Northern Ireland during the Troubles. One day a distraught woman came to the door and asked to make a call to her husband. My mother consented, the woman made a very odd short call and left. For months afterwards we had strange noises on our line, clicks and echoes. I suspect our line was monitored after that call had been traced back to us. I don't know who she called but it always stuck in mind that one mistake was enough to emd up on a list. On