An organ trafficking case takes a shocking turn, and a young girl is on trial for residential burglary. Plus, Amy and Mark start wedding planning, Lola and Robin remain strained, and Luke and Mark continue to pursue a serial killer theory.

A scathing review rattles Maeve's resolve. Adam and Michael bond over life as a bachelor. Ruby helps Otis with his campaign - and his loneliness.

Nam Hee-shin leaves for the railroad ceremony to take part in a secret plan, but she faces several obstacles as hiccups occur and rivals take notice.

While Angela's business booms, Lil Ankh takes Stephen for a ride, and Zuri finds herself roped into her grandparents' epic battle of the sexes.

With international stock markets in freefall, Helen is plunged into crisis when a gossip columnist threatens to expose her troubled past. Feeling hunted, she turns to embattled CEO Charlie Tate for help.

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.

Derfel feels uncomfortable about the attack on the mine - which Owain is keeping a secret. Nimue is discovered by Merlin who helps heal her. Tristan arrives demanding retribution but Owain denies his guilt.