• 
• Frank Grimes
• Young Behan
  

• 
• Bruce Heighley
• Charlie Millwall
  

• 
• Niall Toibin
• Brendan Behan
  

• 
• George Connolly
• Young Behan
  Ken Jones
  

• 
• Francis Bethencourt
• Mr. Whitbread
  

• 
• Mairin D. O'Sullivan
• Mrs. Gildea
  

• 
• Patricia McAneny
• Sheila
  

• 
• Amy Burk
• Sheila
  Warder's Wife
  

• 
• Helena Carroll
• Mrs. Gildea
  

• 
• Dean Santoro
• Mr. Whitbread
  Cragg
  Detective Vereker
  

• 
• Norman Allen
• Hartigan
  Harty
  

• 
• Don Billett
• I.R.A. Man
  Jock
  Smith
  

• 
• Michael Cahill
• Chewlips
  I.R.A. Man
  

• 
• Phyllis Craig
• Liverpool landlady
  

• 
• Marilyn Crawley
• Ensemble
  

• 
• Roslyn Dickens
• Ensemble
  Warder's Wife
  

• 
• Brendan Fay
• Emigration Official
  I.R.A. Man
  Library Warder
  Voice of the Judge
  

• 
• Liam Gannon
• Callan
  I.R.A. Man
  Rivers
  

• 
• Peter Hock
• Ensemble
  Borstal Priest
  Ken Jones
  Library Warder
  

• 
• Terry Lomax
• Brownie
  Shaggy
  

• 
• John MacKay
• Prison Governor
  The Inspector
  

• 
• Kenneth McMillan
• Cook
  Minister
  Tubby
  

• 
• Drout Miller
• James
  Joe
  

• 
• Don Perkins
• Italian Priest
  

• 
• Arthur Roberts
• Mr. Holmes
  Welsh Warder
  

• 
• Stephen Scott
• Governor of Borstal
  Prison Chaplain
  

• 
• Tom Signorelli
• Ensemble
  

• 
• Joseph Warren
• The Sergeant
  Warder O'Shea
  

• 
• James Woods
• Dale
  Tom Meadows
  

• 
• Richard Yanko
• Ensemble
  Detective Vereker
  

• 
• Richard Yesso
• Ensemble
  Cragg
  

• 
• Robert Horen
• Cook
  Emigration Official
  Ensemble
  Minister
  Tubby
  Voice of the Judge
  I.R.A. Man
  

• 
• David Matson
• Emigration Official
  Ensemble
  Jock
  Library Warder
  Smith
  

• 
• George Connolly
• Young Behan
  Young Behan
  

• 
• Terry Lomax
• Young Behan
  

• 
• Kenneth McMillan
• Brendan Behan
  Library Warder
  Prison Chaplain
  

• 
• Norman Allen
• Charlie Millwall
  

• 
• Amy Burk
• Girl in court
  Sheila
  Warder's Wife
  

• 
• Marilyn Crawley
• Liverpool landlady
  Mrs. Gildea
  

• 
• Roslyn Dickens
• Warder's Wife
  Sheila
  

• 
• Brendan Fay
• Brendan Behan
  Cook
  

• 
• Peter Hock
• Italian Priest
  Jock
  Joe
  Ken Jones
  Chewlips
  Library Warder
  

• 
• John MacKay
• Emigration Official
  Governor of Borstal
  Warder O'Shea
  Mr. Whitbread
  

• 
• Drout Miller
• I.R.A. Man
  

• 
• Don Perkins
• Prison Governor
  Tubby
  

• 
• Dean Santoro
• Dale
  Voice of the Judge
  

• 
• Stephen Scott
• The Inspector
  The Sergeant
  

• 
• Tom Signorelli
• Brownie
  Harty
  James
  Shaggy
  Dale
  Tom Meadows
  

• 
• James Woods
• Callan
  

• 
• Richard Yanko
• Detective Vereker
  Mr. Holmes
  Rivers
  Welsh Warder
  

• 
• Richard Yesso
• Chewlips
  Cragg
  Tom Meadows
  Joe
  

• 
• Robert Horen
• Callan
  Cook
  Joe
  Library Warder
  Minister
  Mr. Holmes
  Prison Governor
  Tubby
  

• 
• David Matson
• Borstal Priest
  Cragg
  Detective Vereker
  James
  Jock
  Minister
  Prison Chaplain
  

• 
• Brendan Behan
• Based on a book
  

• 
• Frank McMahon
• Adapted for the stage by
  

• 
• Tomas MacAnna
• Director
  

• 
• Neil Peter Jampolis
• Scenic Supervision
  Lighting Design
  

• 
• Robert Fletcher
• Costume Supervision
  

• 
• Bill Ross
• Production Stage Manager
  

• 
• Bernard Pollock
• Stage Manager
  

• 
• William G. Johnson
• Stage Manager
  

• 
• Peter Hock
• Stunt Coordinator
  

• 
• Richard Horner
• General Manager
  

• 
• Al Jones
• Company Manager
  

• 
• Lee Solters
• General Press Representative
  

• 
• Harvey B. Sabinson
• General Press Representative
  

• 
• Stanley F. Kamkinsky
• Press Representative
  

• 
• Jay Russell
• Press Representative
  

• 
• Ingram Ash
• Advertising
  

• 
• The Blaine Thompson Agency
• Advertising
  

• 
• Michael McAloney
• Producer
  

• 
• Burton C. Kaiser
• Producer
  

• 
• The Abbey Theatre of Dublin
• Produced in association with
  

• 
• Joyce Sloane
• Associate Producer