Season 7, Episode 04
Defending Your Life
While investigating a series of murders, Dean and Sam learn that the Egyptain god Osiris is responsible for the killings. A god with nothing but revenge on his mind, Osiris is putting random people on trial for any mistakes they've made in the past and then promptly killing them if they're found guilty. Upon sensing Dean's guilt, Osiris puts him on trial with Sam becoming Dean's lawyer. But both Sam and Dean are stunned when Osiris calls a witness, someone they thought they'd never see again.
- Forgiveness: At the end of the episode, when Dean asks why Osiris didn't go after Sam, Sam says that he has let go of his guilt and moved past it.
- Go Out with a Smile: The last we ever see of Jo on the show is her tenderly cupping Dean's cheek and smiling at him before vanishing back into whatever afterlife Osiris pulled her out of.
- Jacob Marley Apparel: Jo Harvelle's ghost is wearing the same clothes she died in. However, she doesn't seem to still have the injuries (basically, disembowelment via hellhound ) she died from.
- Undeathly Pallor: Jo is way paler now that she's a ghost than she ever was as a flesh-and-blood human.