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|  |  | Cast |  |  |  |  |  | David de Beaudrigue | BADEL, Alan |  | Voltaire | ROSSITER, Leonard |  | Mme Calas | CRUTCHLEY, Rosalie |  | Jean Calas | PAUL, John |  | Maitre Chalier, a lawyer | SCOTT, Alex |  | Moynier, de Beaudrigue's assistant | SHAPS, Cyril |  | Duke of Choiseul | CRIDDLE, Tom |  | Saint-Florentin, minister of state | CALDICOT, Richard |  | Laffiteau, 'White Penitents' leader | DYCE, Hamilton |  | Dr Tronchin, Voltaire's physician | HEPTON, Bernard |  | Mme Denis, Voltaire's niece | DRUMMOND, Vivienne |  | Wagniére, Voltaire's secretary | MACANN, Peter |  | Louis Calas | OSBORNE, Brian |  | Pierre Calas | THOMPSON, Paul |  | Lavaysse, naval cadet | LONG, Matthew |  | Jeannette, the family servant | MARRIOTT-WATSON, Nan |  | Mme Durand | CUNDELL, Pamela |  | Bergerot | FAITH, Gordon |  | Gorse, surgeon's assistant | MUNDELL, Michael |  | Father Bourges | FINN, Edwin |  | assesseur | JAMES, Robert |  | town crier | TICKNER, Royston |  | executioner | REID, Milton |  |  |  | Credits |  |  |  |  |  | Director | CARTIER, Rudolph |  | Production Company | BBC |  | Producer | BAKEWELL, Michael |  | Adaptation | MARQUIS, Max |  | Based on 'L'Affaire Calas' by | LORENZI, Stellio |  |  | CASTELOT, André |  |  | DECAUX, Alain |  | Designer | JAMES, Norman |  | Music | KAY, Norman |  |  |  |  |  |  |  |  |