Vera Pearce (Edith Cavell), Harrington Reynolds (Rev. Thos. Gerard), Charles Post Mason (Georges Renard, a Belgian officer), Ethel Bashford (Yvonne Loudet, his sweetheart), John Gavin (Captain von Hoffberg, German cavalry officer), Charlies Villiers (Cries, a German spy), Percy Walshe (Baron Von Bissell, the German Military Governor of Brussels), Georges Portees (Dr Schultz), James Martin (Monsieur Renard), W. Farnell (A disabled soldier), Clare Stephenson (Madam Renard), Nellie Power (Nurse Marcheau), and Ronald Staveley (American Ambassador).
Source: 'New Australian Photoplay', Sunday Times, 23 January 1916, p.16 and contemporary advertisements.
Released in Australia on 31 January 1916: Edith Cavell had been executed on 12 October 1915, so the film had a quick turnaround, appearing while anger about the execution was still fresh.
An English film on the same subject was being shown around England at the same time.