Damnation (2017)

S1E13 From Fear to Eternity

Title: From Fear to Eternity Plot: The sisters receive a chilling warning from their mother about a demon that emerges every 1300 years on Friday the 13th, preying on witches by instilling terror until they perish. As the day approaches, Phoebe grapples with her anxiety about her responsibilities at a new job, while Piper finds herself exasperated by her own superstitions regarding relationships that begin on this ominous date.