Chilling Adventures of Sabrina has been cancelled by Netflix after three seasons.The streaming platform announced on Wednesday (July 8) that the drama will end when it returns later this year for “part four.”The original series, which stars Mad Men’s Kiernan Shipka as the titular teenage witch, will return for eight final episodes.Showrunner Roberto Aguirre-Sacasa said: “Working on Chilling Adventures of Sabrina has been an incredible honour from day one.