Katie visits Cobb County Jail in Georgia and meets pregnant women who face being separated from their babies just hours after giving birth.

Katie heads to a facility in Texas to visit pregnant women and mothers struggling with drug addiction.

Katie travels to the American Bible Belt where around three quarters of adults identify as Christian, and visits a faith-based alternative to prison that supports pregnant women and mothers.

Katie travels to Illinois, where one in 20 children have a parent who's locked up. She visits Decatur Prison, a facility that allows mothers to keep their babies with them behind bars.

Katie travels to Chicago where eight in 10 women locked up are mothers. She learns about a sheriff keeping pregnant women out of prison nd a programme keeping imprisoned women in touch with their kids.