→14.19 Jack in the Box
A few days after Mary's death, the Winchesters and Castiel hold a hunter's memorial for Mary at [[the Bunker]], attended by many of the hunters Mary was close with. Also in attendance is a [[wraith]] from a nest Mary had hunted with [[Bobby Singer (Apocalypse World)|Bobby Singer]] the last time they worked together. After killing the wraith, Bobby guesses that the wraith had been present to gloat about Mary being dead. However, Castiel feels that Mary would've appreciated the fact that her hunter's memorial was complete with a monster, and Bobby agrees. Bobby subsequently becomes determined to hunt down and kill Jack for what he did, as does Dean.
[[Castiel ]] tries to get to Jack in [[Heaven ]], [[Dumah ]] threatens to end John and Mary's shared Heaven with a snap of her fingers if Castiel doesn't do as she says. In retaliation and to protect John and Mary, Castiel instantly kills Dumah with his [[angel blade]], ensuring their safety.