We delve into Aoife Cassidy's past, tracing her days in the convent, her peculiar gifts and taking us right to Father Percy's door the night of the murder. But all is not as it seems. 

Colman and Massey work together to capture the true culprit behind Father Percy's murder – but there are darker figures in the shadows who still walk free. 

Lorna is close to understanding how her daughter was hidden, but an abrupt end questions her sanity. Finding Aoife at last brings Lorna the peace that she needs, although Colman doesn't see it that way at all. As a final gesture, Colman brings some good news.