Guest Stars: Hugh Burden as Brian Hooper | Sheila Reid as Mavis | Ray Brooks as Philip | Alan MacNaughtan as Doctor | Carl Forgione as Christopher | Edward de Souza as Policeman

Guest Stars: Mary Peach as Jane Dee | Anthony Kemp as Arthur Dee | Rosemary Hall as Catherine Dee | Caroline Monkhouse as Joan Kelly | John Warner as Count Rosenberg | Frank Finlay as Dr Dee | Alan Dobie as Edward Kelly

Guest Stars: Antony Webb as Stage Manager | Patrick O'Connell (2) as Captain O'Neilan | Daphne Anderson as Lucia Franzia | George Selway as Giorgio Franzia | Anne Cunningham as Marina | Geoffrey Bayldon as Don Antonio Capitani | Jacqueline Pearce as Eva Franzia | Jeremy Brett as Giacomo Casanova

Guest Stars: Barry Wilsher as Fred Wells | Roger Kemp as Frank Posmore | Norman Shelley as Sir James Crichton-Browne | Debbie Bowen as Mary Creery | Elsie Arnold as Mrs Smith | Robert Young (2) as Chemist | John Barcroft as Douglas Blackburn | John Baker (1) as Hotel Porter | Richard Todd as Edmund Gurney | Diana Fairfax as Kate Gurney | Anthony Bate as Frederick Myers | Ray Brooks as Albert Smith | Lynda Baron as Alice Smith | John Gill (1) as Rev. A.M. Creery

Guest Stars: John Bryans (1) as Police Sergeant | Arnold Yarrow as Stevo | Joby Blanshard as Yasha | George A. Cooper (1) as Governor | Nigel Terry as Generalov | Christopher Timothy as Andreyushkin

Guest Stars: Ronald Lacey as Moritz Scharf

Guest Stars: Rhoda Lewis as Norah | Donald Gee as Turner | Michael Graham Cox (3) as Bill | Ros Drinkwater as Julia | Ronald Hines as James | Patricia Maynard as Receptionist | Tony Blackburn as Radio Voice | Judith Chalmers as Radio Voice | Stephen Jack as Radio Voice | Anne Stallybrass as Kate | Peter Stephens as Captain Carruthers | Nigel Davenport as Donkin | Norman Rodway as Murphy | Geoffrey Bayldon as Palmer | Arnold Ridley as Tunnicliffe | Arthur Cox as Featherston | Fiona Walker as Susan | John Bryans (1) as Mr. Mellish | Stephanie Bidmead as Mrs. Mellish | Philip Bond (1) as Stephens

Guest Stars: Nancie Jackson as Mrs. Patterson | Joby Blanshard as Waiter | Roy Pearce as Barman | Ray Armstrong (1) as Tugman | John Nettleton as Patterson | Frederick Jaeger as Walter

Guest Stars: Milton Reid as Executioner | Royston Tickner as Town crier | Robert James (2) as Assesseur | Michael Mundell as Gorse | Gordon Faith as Bergerot | Bernard Hepton as Dr. Tronchin | Hamilton Dyce as Laffiteau | Richard Caldicot as Saint-Florentin | Cyril Shaps as Moynier | Leonard Rossiter as Voltaire

Guest Stars: Antony Webb as 2nd Policeman | Roger Jones as 1st Policeman | Michael Crawford as Danny | Brian Wilde as Rev. James | Doris Hare as Mrs. Todd | Maurice Denham as Mr. Todd

Guest Stars: James Cairncross as Brewer Smith | Wilfred Carter as Mr. Buck | Peter Pratt as Mr. Blunt | Claire Davenport as Mrs. Bliss | Norman Wynne as Headmaster | Edwin Richfield as John Gotobed

Guest Stars: Earl Cameron as Chief Ozuomba | Gordon Jackson (2) as Father Joseph | Clifton Jones as Prosecuting counsel | Rudolph Walker as Madu | Elroy Josephs as Defending counsel