Fringe only aired on the WB.
`` Lily Sunder Has Some Regrets '' is the tenth episode of the paranormal drama television series Supernaturals season 12 , and the 251st overall .. paranormal. paranormal. drama. drama. season 12. Supernatural ( season 12 ). The episode was written by Steve Yockey and directed by Thomas J. Wright .. Thomas J. Wright. Thomas J. Wright. It was first broadcast on February 2 , 2017 , on The CW .. The CW. The CW. In the episode , after an Angel is killed , Sam , Dean and Castiel investigate and discover there 's a hunter that 's killing connected angels to the murder of her child and the father of the child .. The episode received mostly positive reviews , with critics praising the case of the week .