A police computer expert is seconded to Belfast to track down the identity of an IRA mole.
Eamon Boland
Freddie Ross
Tony Doyle
Donal McCarthy
Sean Caffrey
Chief Inspector Daisy Burke
Des McAleer
Dermot Shea
Denys Hawthorne
Daniel Kent
James Donnelly
Thomas Mallin
Alan Devlin
Eamon Duffy
Emer Gillespie
Clare Barrett
