In the spirit of "Mean Girls" and "Heathers" comes this 2010-2017 teen drama series based on Sara Shepard's novels. When the leader of a clique of high school girls turns up dead after disappearing a year earlier, four of her friends begin receiving messages from a mysterious stalker who threatens to reveal all of their deepest, darkest secrets if they don't do what he says. Ashley Benson, Troian Bellisario, Shay Mitchell, Lucy Hale star.141 episodes on 36 discs. 116 hrs. Widescreen (Enhanced); Soundtrack: English Dolby Digital 5.1; Subtitles: English (SDH), French, Spanish; deleted scenes; featurettes.