Sabrina, the Teenage Witch - Season 2 - Eps 10: To Tell a Mortal
On Friday the 13th a witch can tell a mortal about being a witch because at the end of the day they will forget about their secret so Sabrina tells Valerie and Harvey.
About Sabrina, the Teenage Witch

Title: Sabrina, the Teenage Witch
First Air Date: 1996-09-27
Last Air Date: 2003-04-24
Status: Ended
Rating: 7.811/10 (from 1129 votes)
Language: EN
Seasons: 7
Total Episodes: 163
Network: ABC The WB
Genres: Comedy, Family, Sci-Fi & Fantasy, Kids
Production Companies: Hartbreak Films, Viacom Productions, Paramount Television, ABC Productions, Finishing the Hat Productions, Warner Bros. Television
Synopsis
On her sixteenth birthday, Sabrina Spellman discovers she has magical powers. She lives with her 600-year-old aunts Hilda and Zelda as well as talking cat Salem in the fictional town of Westbridge, Massachusetts.
Cast

Melissa Joan Hart
Sabrina Spellman

Elisa Donovan
Morgan Cavanaugh

Soleil Moon Frye
Roxie King

Nick Bakay
Salem Saberhagen (voice)