While this show is basically a throwback at this point, it's still a must-watch for fans of suspense shows. This family classic has the right amount of hallway drama and dark, creepy stalking that will have you thinking, Guinevere Beck had it kind of easy — well, at least until the end. Watch as these five best friends navigate the ups and downs of teenage drama all while being stalked by an anonymous person who basically terrorises them. We promise it's a fun time.
Watch "Pretty Little Liars" on BBC iPlayer.