 "Secret" is also the theme song for the teen drama television series "Pretty Little Liars" ("PLL") and some of its lyrics are quoted during an episode in the season 2 episode "Over My Dead Body".Sickick made a sample of "Secret" for the song titled "Who Am I", complete with the music video was based on the series.In 2019, a new version of "Secret" was performed by Denmark + Winter, also served as the theme from the "PLL" spin-off series "".