Teaser photos from "Supernatural" season 12, episode 13 confirms the return of Crowley's son, Gavin. While the Winchester brothers investigate a murder, Dean and Sam will find out Gavin's involvement and will try to hunt him down. Meanwhile, Kelly Kline will decide to accept the help of a demon after her life was placed in danger.
The next chapter to the lives of the Winchester brothers of "Supernatural" will focus on solving a murder that happened in a museum. Dean and Sam believe that a ghost is responsible for the peculiar death, and while they delve deeper into the case, they will find out a surprising revelation. Gavin is alive and he will be back on "Supernatural" season 12 episode 13. Apparently, the Winchester brothers will find out that he is the culprit of the death case they are trying to resolve.
The Winchester brothers will learn that a merchant ship that sank in 1723 is connected to the murder case. Sam and Dean will also discover that Gavin was supposed to be a passenger on the ship. This will lead them to suspect Crowley's son and will head on to Rowena to as for her help. The witch will then use her power to locate Gavin, who might have been just around them after all. How they all face each other in an unexpected reunion will be something that fans will have to wait for.
Meanwhile, the synopsis of "Supernatural" season 12, episode 13 titled "Family Feud" reveals that angels and demons are set to get the Nephilim. Kelly though is still unaware that she is carrying Lucifer's child. Unfortunately for the angels, Kelly will accept the offer of protection from a demon after she gets into trouble and almost got killed.
Previously, "Supernatural" showrunner Andrew Dabb hinted that Lucifer will soon return, possibly through another human body. From the previous episode, "Stuck in the Middle (With You)," Lucifer already made his presence felt and Mark Pellegrino is back to play the role. Lucifer was previously placed by Rowena in the bottom of the ocean, and apparently, he survived. Viewers can then expect to see Lucifer coming for his child in the upcoming episodes.
"Supernatural" season 12, episode 13 airs on Thursday at 8 p.m. on CW.