After his daughter is killed by terrorists, Detective Tommy Murphy vows to take on the most dangerous undercover assignments.
James Nesbitt as DS Tommy Murphy,
Claudia Harrison as DI Annie Guthrie [ 1-2 ],
Del Synnott as DC Alan Carter [ 1-2 ],
Mark Benton as Father McBride [ 2 ],
Sarah Berger as DI Hilary Clarke [ 2 ],
Owen Teale as DS Paul Allison [ 3 ],