The Bois de Vincennes is Paris’ largest park and is home to horse riding schools and a zoo but at night, it’s a prostitution hotspot.

CNN‘s Melissa Bell, in a new report, reveals how Nigerian women are forced into prostitution by human traffickers.

The women are even forced to perform some rituals, including taking an oath in a coffin, before leaving Nigeria.

They are afraid to speak out, but one of them did, and she shares her story with CNN.

Watch: