'Never trust a pretty girl with an ugly secret' | All things about Pretty Little Liars. It started out as a book series written by Sara Shepard. Marlene King created, wrote, and directed the TV Series. Very popular show on Freeform.com (formerly known as ABC Family). The second half of season 7 began on April 18, 2017 and finished on June 27, 2017! The show is over!!! :(