| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Laurence Naismith | ... | Judge Fulton | |
| Imogen Hassall | ... | Maria Lorenzo | |
| Alex Scott | ... | Coley | |
| Michael Godfrey | ... | Robert Dupont | |
| Bruno Barnabe | ... | Bruno, Maitre de | |
| Neal Arden | ... | Inspector Flavel | |
| John Acheson | ... | Triver | |
| Nina Baden-Semper | ... | Air Hostess (uncredited) | |
| Maxwell Craig | ... | Aircraft Captain (uncredited) | |
| Cliff Diggins | ... | Dupont's Henchman (uncredited) | |
| Beulah Hughes | ... | Brett's girl in Bar (uncredited) | |
| Alf Joint | ... | Waiter (uncredited) | |
| Francoise Leriche | ... | Blonde Hitch-Hiker 1 (uncredited) | |
| Richard Lester | ... | Coley's 1st Henchman (uncredited) | |
| Andrea Lloyd | ... | Air Hostess 3 (uncredited) | |
| Terence Maidment | ... | Coley's 2nd Henchman (uncredited) | |
| Olivia Mela | ... | Girl in bikini (uncredited) | |
| Maria O'Brien | ... | Air Hostess 1 (uncredited) | |
| Nosher Powell | ... | English tourist (uncredited) | |
| Jan Rennison | ... | Other girl in bar (uncredited) | |
| Christine Rodgers | ... | Air Hostess 2 (uncredited) | |
| Gordon Rollings | ... | Bar tender (uncredited) | |
| Christine Smith | ... | Danny's girl in Bar (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Susan George | ... | Michelle Devigne | |
| Alfred Marks | ... | Pullicino | |
| Laurence Naismith | ... | Judge Fulton | |
| Harold Goldblatt | ... | Maurice Devigne | |
| Michael McStay | ... | Vernier | |
| Hugh Manning | ... | Chief of Police | |
| Charles Houston | ... | Jacoby | |
| Balbina | ... | Sister | |
| Hugo De Vernier | ... | Hospital Porter | |
| Jean Driant | ... | Douane |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Sinéad Cusack | ... | Jenny Lindley (as Sinead Cusack) | |
| Laurence Naismith | ... | Judge Fulton | |
| Christian Roberts | ... | Mark Lindley | |
| John Kelland | ... | Harvester | |
| Sue Lloyd | ... | Maggie | |
| Veronica Hurst | ... | The Secretary | |
| Victor Platt | ... | The Farmer | |
| Julie Crosthwaite | ... | Mandy (as Julie Crosthwait) | |
| Garfield Morgan | ... | Peter Hayward | |
| Colin Vancao | ... | The Major | |
| Richard Hurndall | ... | David Conron | |
| Edward Malin | ... | Judge Fulton's Barber (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Rosemary Nicols | ... | Melanie Sadler | |
| Cy Grant | ... | Richard Congoto | |
| Andrew Keir | ... | Sir John Hassocks | |
| George Woodbridge | ... | Gregory Ward | |
| Tom Adams | ... | Piers Emerson | |
| Tommy Godfrey | ... | Benny Ryan | |
| Carmen Munroe | ... | Carmen Congoto | |
| Arthur Brough | ... | Moorehead | |
| Clifton Jones | ... | Dr. Kibu | |
| Robert Cawdron | ... | Leyland | |
| Michael Martin | ... | Jackson | |
| Alan Chuntz | ... | Valet (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Annette Andre | ... | Pekoo Rayne | |
| Laurence Naismith | ... | Judge Fulton | |
| Terence Alexander | ... | Crane | |
| Lionel Blair | ... | Quinn Travis | |
| Leslie Crawford | ... | Ravel (as Les Crawford) | |
| John Phillips | ... | Koestler | |
| Melissa Stribling | ... | Lisa | |
| Paul Whitsun-Jones | ... | Inspector Blanchard | |
| Vicki Woolf | ... | rent-a-car Girl |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Ian Hendry | ... | Lord Croxley | |
| Anna Palk | ... | Marie | |
| Patrick O'Connell | ... | Ryder | |
| Robert Flemyng | ... | Sir George | |
| David Rees | ... | TV Interviewer | |
| Basil Dignam | ... | Prime Minister | |
| Duncan Lamont | ... | Benton | |
| Terence Sewards | ... | Marsden | |
| Campbell Singer | ... | Porter | |
| Geoffrey Toone | ... | The General | |
| Olga Lowe | ... | Traffic Warden | |
| David Lodge | ... | Thompson | |
| Harry Fielder | ... | Clay Pigeon Operator (uncredited) | |
| Howard Lang | ... | Coalition Club Member (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Johnny Briggs | ... | Charlie | |
| Jeremy Burnham | ... | Scott Maskell | |
| Joanne Dainton | ... | Miss Lindsay | |
| Anne De Vigier | ... | Nurse Crane | |
| Bernard Lee | ... | Sam Milford | |
| Reginald Marsh | ... | Dr. Fowler | |
| Vivian Neves | ... | Danny's Girl (Annabelle) (as Vivien Neves) | |
| Gerald Sim | ... | Dr. Gordon | |
| Diana Terry | ... | Brett's Girl | |
| Tony Wright | ... | David Alton |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Cyd Hayman | ... | Lyn | |
| Christopher Coll | ... | London Agent | |
| Patrick Connor | ... | Train Guard | |
| Ed Devereaux | ... | Ryker | |
| Peter Forbes-Robertson | ... | Inspector Langford | |
| Dudley Foster | ... | Heather | |
| Tim Goodman | ... | Webster | |
| Patrick Jordan | ... | Pelli | |
| Kit Taylor | ... | Croupier | |
| Richard Vernon | ... | Sir Maxwell Dean | |
| Graham Weston | ... | Northern Agent |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Anna Gaël | ... | Suzy (as Anna Gael) | |
| Derren Nesbitt | ... | Groski | |
| Michael Anthony | ... | Hotel Desk Clerk | |
| Gary Cockrell | ... | Frank | |
| Juliet Harmer | ... | Prue | |
| Jasmina Hilton | ... | Serena | |
| Frederick Jaeger | ... | Luther | |
| Michael Segal | ... | Denton | |
| Patrick Troughton | ... | Count Marceau | |
| Kenneth J. Warren | ... | Verner |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Larry Storch | ... | Angie | |
| Laurence Naismith | ... | Judge Fulton | |
| Rose Alba | ... | Madama La Gata | |
| John Alderson | ... | Kyle Sandor | |
| Anna Brett | ... | Bank Secretary | |
| Kirsten Lindholm | ... | Marissa Nave | |
| Lionel Murton | ... | Ben | |
| Alan Chuntz | ... | Sandor's Bodyguard (uncredited) | |
| Paddy Ryan | ... | Cinema Projectionist (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Suzanna Leigh | ... | Emily | |
| Peter Vaughan | ... | Schubert | |
| George Baker | ... | Britten | |
| James Beckett | ... | Previn | |
| James Bree | ... | Bill Wilton | |
| Jeremy Child | ... | Carlton | |
| Leon Eagles | ... | Profokiev | |
| John Glyn-Jones | ... | Dr. Rogers | |
| Morris Perry | ... | Beecham-Bennett | |
| Neil Wilson | ... | Police Constable | |
| Peter Brace | ... | Schubert's Man 1 (uncredited) | |
| Gerry Crampton | ... | Baxter (uncredited) | |
| Bob Simmons | ... | Jeep Driver (uncredited) | |
| Rocky Taylor | ... | Schubert's Man 2 (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Geoffrey Keen | ... | Thaddeus Krane | |
| Suzan Farmer | ... | Ann Summers | |
| Laurence Naismith | ... | Judge Fulton | |
| Allan Cuthbertson | ... | Colonel Wright | |
| Terence Edmond | ... | Cliff Turner | |
| Peter Gilmore | ... | Mather | |
| Neil Hallett | ... | Prentice | |
| Juliet Harmer | ... | Prue | |
| Derek Newark | ... | Lloyd | |
| Patrick Newell | ... | Fat Man | |
| John Stone | ... | Auctioneer |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Leo Genn | ... | Sir Hugo Chalmers | |
| Nicola Pagett | ... | Carla Wilks | |
| Laurence Naismith | ... | Judge Fulton | |
| Glynn Edwards | ... | Boris | |
| Anouska Hempel | ... | Carla II | |
| Brian Jackson | ... | Jenson | |
| Valerie Leon | ... | Space Queen | |
| Deborah Moore | ... | Little Girl | |
| Peter Sallis | ... | Piper | |
| Madeline Smith | ... | Carla I | |
| Noel Willman | ... | Theopolos | |
| Derek Chafer | ... | Policeman (uncredited) | |
| Geoffrey Cheshire | ... | Taxi Driver (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Terry-Thomas | ... | Archibald Sinclair Beachum | |
| Suzy Kendall | ... | Kay Hunter | |
| Laurence Naismith | ... | Judge Fulton | |
| Stephen Greif | ... | Krilov | |
| Frank Maher | ... | Jones | |
| John Orchard | ... | Gregor | |
| Michael Balfour | ... | Donkey cart Driver | |
| Stanley Meadows | ... | David Price | |
| Geraldine Moffat | ... | Senka | |
| Richard Burrell | ... | Smith |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| June Ritchie | ... | Charlie | |
| Peter Bowles | ... | Mitchell | |
| Laurence Naismith | ... | Judge Fulton | |
| William Marlowe | ... | Carl | |
| David Healy | ... | Colonel Adler | |
| Shane Rimmer | ... | Lomax | |
| Anthony Doonan | ... | Grant | |
| J.M. Bay | ... | Anderson | |
| James Cosmo | ... | Inspector Williams | |
| Karen Kessey | ... | Joan (as Keren Kessey) | |
| Margaret Nolan | ... | Sophie | |
| Katherine Kessey | ... | Jean | |
| Carol Cleveland | ... | Girl at Airport | |
| Victor Platt | ... | The Farmer | |
| Michael Sloan | ... | Radio Operator | |
| Bob Sherman | ... | The Lieutenant | |
| George Fisher | ... | Kramer | |
| Bill Herbert | ... | Uniformed Policeman (uncredited) | |
| Dennis Plenty | ... | Plain Colthes Policeman (uncredited) | |
| Terry Yorke | ... | Plainclothes Policeman at Airport (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Hannah Gordon | ... | Lucy Scott | |
| John Ronane | ... | Rupert Hathaway | |
| Leon Greene | ... | Abel Gaunt | |
| Michael Wynne | ... | Policeman | |
| Talfryn Thomas | ... | The Poacher | |
| Michael Sheard | ... | Constable John Walden |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Joan Collins | ... | Sidonie | |
| Robert Hutton | ... | Frank Rocco | |
| Laurence Naismith | ... | Judge Fulton | |
| Robert Rietty | ... | Torino | |
| Ian Thompson | ... | Vasile | |
| Ferdy Mayne | ... | Count Sangallo | |
| Robert Gallico | ... | Manny Howard | |
| Jean Marsh | ... | Nicola | |
| Arnold Diamond | ... | Brusati | |
| Harry Fielder | ... | Policeman (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Vivienne Ventura | ... | Lisa (as Viviane Ventura) | |
| David Cargill | ... | Patterson | |
| George Murcell | ... | Zorakin | |
| Ricardo Montez | ... | Inspector Santos | |
| Sarah Lawson | ... | Mary | |
| Clive Cazes | ... | Matra | |
| Ralph Bates | ... | Michel | |
| George Roderick | ... | Bodega Landlord | |
| Michael Culver | ... | Kurt |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Catherine Schell | ... | Kristin | |
| Laurence Naismith | ... | Judge Fulton | |
| Tony Bonner | ... | Jon | |
| Frank Gatliff | ... | Andersson | |
| Yutte Stensgaard | ... | Bibi | |
| Penny Sugg | ... | Liv | |
| Bernard Horsfall | ... | Christianson | |
| Walter Horsbrugh | ... | The Butler | |
| Griffith Jones | ... | Lars Seelman | |
| Marianne Stone | ... | Chambermaid |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Joss Ackland | ... | Felix Meadowes | |
| Nigel Green | ... | John Cavendish | |
| Kate O'Mara | ... | Heidi Schulman | |
| William Mervyn | ... | Sir Charles Worthington | |
| Magda Konopka | ... | Ingrid Meadowes | |
| Harvey Hall | ... | Col Ivan Ivanov | |
| George Merritt | ... | Chivers | |
| Carl Bohen | ... | Dieter Schultz (as Carl Bohun) | |
| Elliott Sullivan | ... | Joe Pfeiffer | |
| Brian Hayes | ... | Benson |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair / The General / The Admiral / Lady Agatha | |
| Diane Cilento | ... | Kate Sinclair | |
| Denholm Elliott | ... | Roland | |
| Roland Culver | ... | Duke of Caith | |
| William Rushton | ... | Lance | |
| Moultrie Kelsall | ... | Sir Angus | |
| Christopher Sandford | ... | Onslow | |
| Ivor Dean | ... | Mr. Beebe | |
| Beulah Hughes | ... | Girl dressing the Duke of Caith (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Gladys Cooper | ... | Grand Duchess Ozerov | |
| Prunella Ransome | ... | Princess Alexandra | |
| Gary Raymond | ... | Sergei | |
| Joseph Fürst | ... | Yelker (as Joseph Furst) | |
| Cyril Shaps | ... | Professor Ganguin | |
| Georgina Simpson | ... | Magda | |
| Anouska Hempel | ... | Stewardess | |
| Timothy Parkes | ... | Walther | |
| Arnold Ridley | ... | Uncle Rodney | |
| Denys Peek | ... | Dante | |
| Yuri Borionko | ... | Nikolai (as Yuri Borienko) | |
| Raymond Young | ... | Inspector Mansour | |
| Alf Costa | ... | Policeman in Office (uncredited) |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Jennie Linden | ... | Shelley Masterton | |
| Terence Morgan | ... | Carl Foster | |
| Thorley Walters | ... | John Hatton | |
| Harold Innocent | ... | Coady | |
| Robert Russell | ... | Ramon | |
| Roger Delgado | ... | Estoban | |
| Juan Moreno | ... | Waiter |
| Tony Curtis | ... | Danny Wilde | |
| Roger Moore | ... | Lord Brett Sinclair | |
| Penelope Horner | ... | Carrie Bowman | |
| John Cairney | ... | Jenkins Brothers [Twins] | |
| David Neal | ... | Jerry Sandford | |
| Donald Pickering | ... | Morley Lyndon | |
| Jenny Hanley | ... | Magda | |
| Lois Maxwell | ... | Louise Cornell | |
| Sean Lynch | ... | Yates | |
| Maxwell Shaw | ... | Vine | |
| Helena Ross | ... | Joe | |
| Tim Barrett | ... | John Radcliffe | |
| Russ Henderson | ... | Sam | |
| Sam Kydd | ... | Dwyer |
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