S4, E8: Learning of the death of his three ex-cellmates is sending Paddy round the bend; with the three of them taken out one-by-one in suspicious circumstances, he fears he could be next. To add to his worries, his son Jamie is about to marry, and Mimi is not too keen on the idea. Elsewhere, Karen is shocked when she learns the real truth behind her weekends away with Jamie on a probation course.