Archie's Weird Mysteries (1999)

S1E6 The Haunting of Riverdale

Riverdale is plagued by a mysterious haunting tied to the local library. As the gang investigates, they uncover that the spirit haunting the building is that of a dedicated former librarian who hasn’t found peace. It becomes clear that she lingers due to unresolved matters from her past. Jughead discovers he possesses the crucial element needed to help her find closure and finally leave her earthly ties behind.