The Flaw is a 1923 Australian play by Doris Egerton Jones and Emélie Polini.
The play was a collaboration between Polini, who provided the original idea, and Jones, who was responsible for construction.
It was given a professional production at a time when that was very rare for Australian plays. This production was very popular and toured through Australia and New Zealand.
A man is working himself into ill health to provide for his family. His wife is visited by the wife's first husband who she thought was killed in the war. The first husband tries to blackmail the wife by getting her to reveal her first husband's invention. The wife resorts to murder.