Arc 6Grace, Ghosts, and Demons
Dean, Sam, and Bai Haorui faced angels, demons, ghosts, and supernatural killers while Anna reclaimed her Grace and Bai Haorui advanced his cultivation. The arc ended with Uriel taking Dean to interrogate Alastair, while Sam turned to Ruby for help.
- Sam told Dean how Ruby had rescued him from Hell and trained him, then Ruby led the group to Anna as Alastair's demons closed in.
- Anna recovered her memories and revealed she was a fallen angel, then reclaimed her Grace and flew away after Bai Haorui fought Uriel and Alastair.
- Bai Haorui reached the sixth level of Refining Qi into Gang, survived attacks by demons and angels, and helped Dean and Sam defeat the siren Nick Monroe.
- Dean, Sam, and Bai Haorui investigated a ghost at Truman High School, helped Barry let go of his hatred, and left with Dean reunited briefly with Amanda.
- Bai Haorui and Bobby rescued captive girls and killed the vampire Marcus, then freed Dean and Sam from Nick Monroe's siren control.
- Bai Haorui fought Alastair while Dean and Sam discovered demons planned to kill a reaper, then the brothers entered the Spirit World and rescued Tessa from Alastair.
- Dean and Sam thwarted Alastair's plan, while Bai Haorui defended their bodies and Castiel warned Dean that Heaven was divided, and Pamela then warned Sam that darkness was consuming him.
- Uriel took Dean away to interrogate Alastair after Bai Haorui fought him, while Sam called Ruby for help and Dean refused to torture Alastair.