This is based on a true story.
Frida Farrell is a survivor of sex trafficking
The part in Apartment 407 when Isobel enters the apartment is based on the real event of Frida Farrell including the part where she was forced to wear used underwear for women.
"Selling Isobel" has since been retitled as "Apartment 407".
The movie has alittle bit of the same details as the movie like The 24th Day.