In September 2017, it was reported that a live-action television series was being developed for The CW by Warner Bros. Television and Berlanti Productions, with a planned release in the 2018–2019 television season. Based on the comic series Chilling Adventures of Sabrina, featuring the Archie Comics character Sabrina the Teenage Witch, the series would be a companion series to Riverdale. Lee Toland Krieger will direct the pilot, which will be written by Aguirre-Sacasa. Both are executive producers along with Berlanti, Schechter, and Goldwater. In December 2017, it was reported that the project had moved to Netflix under a yet-to-be-announced new title. Two seasons, comprising ten episodes each, have been ordered by the streaming Service. In January 2018, it was announced that the lead role of Sabrina Spellman would be portrayed by Kiernan Shipka, and CW President Mark Pedowitz noted that, "at the moment, there is no discussion about crossing over" with Riverdale. Filming for first season began on March 19, 2018, just as filming of the second season of Riverdale concludes, which will allow the same crew members to work on both series. It is expected to film back-to-back with the second season.