Sam and Dean investigate Bobby's home town where the dead are rising from the grave but instead of attacking humans, they are happily reuniting with their families. The brothers turn to Bobby for help but he tells them not to worry about it and to leave town. Suspicious, Dean investigates and comes face to face with Bobby's dead wife who has no memory of what happened to her. Once the zombies start turning evil, the boys tell Bobby he has to kill his wife but he refuses. Written by
Did You Know?
Carrie Fleming was cast as Karen Singer since Elizabeth Marleau, who had played her in season 3's "Dream a Little Dream of Me", was pregnant. The producers thought it would be too weird, even for Supernatural, to feature a pregnant zombie. Fleming had previously played a different character in season 2's "In My Time of Dying". See more
In February in South Dakota it is likely there would be snow. South Dakota also does not have a "storm season" in February. Storms like the one seen in the show would be more likely to occur in May/June. See more
[Bobby and Dean take refuge from the zombies in a closet. Dean turns on the light and locks the door from the inside as the horde pound on the door
Kind of a tight fit, don't you think?
It's all right: they're idiots; they can't pick a lock.
[the pounding immediately stops, then the zombies start picking the lock
Don't you ever get tired of being wrong?
I'm making this stuff up as I go. Sue me.
References The Bride of Frankenstein