An Afghan woman's life expectancy is just 44 years, and her life cycle often begins and ends in disappointment: being born a girl and finally, having a daughter of her own. For some, disguising themselves as boys is the only way to get ahead.

Nordberg follows women such as Azita Rafaat, a parliamentarian who once lived as a Bacha Posh, the mother of seven-year-old Mehran, who she is raising as a Bacha Posh as well, but for different reasons than in the past. There's Zahra, a teenage student living as a boy who is about to display signs of womanhood as she enters puberty. And Skukria, a hospital nurse who remained in a Bacha Posh disguise until she was twenty, and who now has three children of her own.

Exploring the historical roots of this tradition, The Underground Girls of Kabul is a fascinating and moving investigation.