Acting Barry Cassin Acting Byzantium Robert Fowlds 2013 John Duffy's Brother Mr. Polter 2006 The Blackwater Lightship Fr. Griffin 2004 The Count of Monte Cristo Old Man Dantes 2002 When Brendan Met Trudy Headmaster 2000 Mystic Knights of Tir Na Nog Cathbad 1999 Some Mother's Son Prosecutor 1996 The Treaty Butler 1991 Fatal Inheritance Dr. Fitzsimmon 1991 The Sleep of Death The Count's Brother (as Barry Cassins) 1980 The McKenzie Break 1970 Ulysses 1967 Agent-readable