"Chapter Ten: The Witching Hour" is the pivotal Season 1 finale of Chilling Adventures of Sabrina (CAOS)
To gain the power needed to stop the spirits, Sabrina signs her name in the Book of the Beast, granting her the ability to summon Hellfire , which she uses to incinerate the ghosts of the Greendale Thirteen. El Mundo Oculto de Sabrina 1x10