Why was this woman sent to a men's prison?

As she entered one of Australia's largest male prisons, Mara Ellis was strip-searched by four prison guards: two men and two women.

She says it was the last time the justice system acknowledged she is a woman before Mara was locked away in solitary confinement.

This week on Background Briefing, Meghna Bali investigates what happens to women in men's prisons.