Know Thy Child

[2][3] A travelling salesman, Ray Standford (Roland Conway), seduces country girl Sadie McClure (Vera James) but forgets about her when she returns to the city and marries Dorothy Graham (Nada Conrade), daughter of his boss.

Dorothy pressures the government to declare bigamous all marriages contracted by people who were "morally pledged" to others.

[4][5] Filming was delayed for some time due to fear of the subject matter, involving illegitimate children, but this was overcome.

[6] The film was shot in Sydney at the Rushcutters Bay Studio with exteriors done at Berowra Waters[7] and at Grenwell Point near Nowra.

[11] Actress Wendy Osborne later claimed she refused a role in the film on moral grounds.