Pete is horrified to realise that he's dug himself in even deeper with J.J. Emma advises Rafferty not to repeat old mistakes when it comes to Joan. Fidelma and Detective Buckley are in a race against time when they discover a gunman in McCoys. When Dean tackles the gunman, the gun goes off, with devastating consequences

As Mairead's condition improves, Dean makes a difficult decision. Carol is forced to mediate when Ali turns up looking for Lorcan Jr. Tyler ups his game when his attempts to make friends in prison backfire.