Watch the full interview with the cast of Pretty Little Liars here on the new People/Entertainment Weekly Network (PEN). Go to PEOPLE.com/PEN, or download the free app on your Smart TV, mobile and web devices.
“Got a secret; can you keep it?” Those lyrics — from The Pierces song “Secret” — have kicked off every hour of Pretty Little Liars for seven seasons. And it’s all thanks to Ashley Benson.
When EW sat down with PLL showrunner I. Marlene King and stars Ashley Benson, Shay Mitchell, Troian Bellisario, Sasha Pieterse, and Lucy Hale, they remembered their days in Vancouver, which is where they filmed the show’s pilot. It was there that they really bonded, whether it was over Thanksgiving dinner or a night out dancing. It was also there that Benson played them all a song.
“On the way back from that shoot, that was when you played in the car what would become our theme song,” Bellisario says to Benson. “You had played it for all of us, and you were like, ‘I want to show it to Marlene because I really think it could be a great theme song.'”
For the full story, watch the video above.