X (2011)

Synopsis: In the erotic thriller X, the oldest profession becomes the most dangerous game when two call girls become hunted prey after they witness a murder. High class prostitute Holly Rowe (the stunning Viva Bianca, Spartacus: Blood and Sand) needs a partner for the final date of her career then it's off to Paris and retirement. She recruits 17-year-old runaway Shay (Hanna Mangan Lawrence) for the evening, and the two set off on what should be an easy job. But when violence explodes unexpectedly, Holly must use her hard-earned savviness and sexual allure to keep them both safe through the most terrifying night of their lives.     Source: Amazon.com