Under Lock and Key

Overview

Mark's story is fully revealed. When he lived in Belfast, he had a girlfriend, Siobhan Doyle. She was supposed to follow him but never did. Siobhan died soon after. His father told him she had died of TB. Instead, she had died at childbirth without him ever knowing. Mark realises how much Siobhan suffered, and is heartbroken. She was sent to a convent. To his utter shock, he finds out that the child survived: a baby girl. He tries to find her, but the nuns will not tell him anything. An accident occurs that forces him back to work: RMS Olympic, a ship in the same class as Titanic, has had a serious accident. Mark is asked to study the implications. Mark's new discoveries are now less important that delivering on schedule. Pirrie and Andrews discover that Mark Muir is a Catholic, but guard his secret.

Guest Stars

Ophelia Lovibond

Kitty Carlton

Ger Carey

Bernie Doyle

Gina Moxley

Mother Superior

Emanuela Postacchini

Sahra

Eve Macklin

Lord Pirrie's Secretary

Gerard McCarthy

Ashley Stokes

Caolan Byrne

Jimmy Smith

Steve Gunn

Bill Armstrong